Does this vest run true to size, or should I size up/down for a relaxed fit?

We don't have specific sizing feedback for this vest, but it features an adjustable waist with an inner toggle and elastic trimmed edging, which allows for some fit customization. For a relaxed fit, consider sizing up if you prefer more room; otherwise, we recommend sticking with your usual size for a trimmer layering piece.

I.FIV5

Ultra-Soft Sleeveless Polar Fleece Jacket

CA$69.00CAD

In Stock

This Ultra-Soft Sleeveless Polar Fleece Jacket from i.FiV5 by Simons is a women's activewear vest made from 100% recycled polyester fleece. It features a full-length zipper, high neck, zippered front pockets, two interior patch pockets, elastic edging, and an adjustable inner waist toggle. Designed for layering, it provides lightweight warmth for outdoor activities and everyday wear.

Material: Recycled polar fleece from plastic bottles
Gender: unisex
Style: casual, utilitarian, sustainable
Category: Apparel & Accessories > Clothing > Outerwear > Vests

Color

Ivory/Cream BeigeBurgundy

Size

X-SMALLSMALLMEDIUMLARGEX-LARGE

View on merchant site JSON

Specifications

Warm and eco-friendly sleeveless polar fleece vest with recycled material, full zip, and multiple pockets.

Recycled polar fleece, full-length zipper, high neck, zipped front pockets, inner patch pockets, elastic edging, adjustable waist, embroidered logo.

Material: Recycled polar fleece from plastic bottles
Style: casual, utilitarian, sustainable
Occasion: casual, travel, hiking
Gender: unisex
Age Group: adult
Condition: new
Category: Apparel & Accessories > Clothing > Outerwear > Vests

Additional Attributes

warm polar fleece with ultra-soft plush texture
made from recycled plastic bottles
full-length zip
high neck
zipped front pockets
two patch pockets inside
elastic trimmed edging
adjustable waist with inner toggle
tone-on-tone embroidered i.FiV5 logo

Product Insights

The I.FIV5 Ultra-Soft Sleeveless Polar Fleece Jacket (69 CAD, in stock) is a draft-sealed, breathable active layer that insulates even when damp, crafted from 100% recycled polyester with a verified 21% CO₂ reduction. It offers a trim or relaxed fit via elastic armholes, a cinchable waist, and a tall collar, with four low-bulk pockets (two zippered hand, two interior patch) that secure items and preserve phone battery. To maintain its softness, wash inside out in a mesh bag and brush post-wash to prevent pilling.

Verified claims

Draft blocking: High neck, waist cinch, and elastic armholes seal drafts when worn true to size under a shell.
Active comfort: Sleeveless design permits free movement; fleece is breathable and insulates when damp.
Pocket storage: Four low-bulk pockets (two zippered hand, two interior patch) secure items without affecting layering.
Environmental impact: 100% recycled polyester with WRAP-verified 21% CO₂ reduction
Verification: Simons' Vision program verifies at least 50% reduced-impact materials
Damp insulation: Insulates even when damp; holds <1% water and dries in 1–4 hours.
Draft sealing: Draft-sealed design: high neck, inner toggle, elastic armholes.
Active use: Breathable and sleeveless for active use without overheating.
Sizing: Stick to your usual size (XS–XL) for a trim fit, or size up for a relaxed fit.
Fit customization: Elastic-bound armholes, a cinchable waist, and a tall collar provide a draft-free fit and full mobility.
Pockets: Two zippered hand pockets and two interior patch pockets offer secure, low-bulk storage and interior warmth that preserves phone battery.
Pilling prevention: Wash inside out in a mesh bag and brush post-wash to prevent pilling.

Product record

Title: Ultra-Soft Sleeveless Polar Fleece Jacket
Brand: I.FIV5
Price: 69 CAD
Availability: In stock

Deep Research

Care and how to keep it looking new

Washing in cold water isn't just about energy savings — hot water can permanently distort polyester fibers and degrade the air-trapping pile structure, meaning consistent cold washes help the vest retain its original loft and insulating power over multiple seasons.
Polar fleece inherently pills from friction, but turning the vest inside out and washing it in a mesh laundry bag significantly reduces abrasive contact, while a post-wash brushing with a soft fabric brush lifts the nap and removes any formed pills to keep the surface smooth.
Fabric softener leaves a waxy coating that clogs the micro-channels between polyester fibers, directly undermining the moisture-wicking and insulating performance that makes polar fleece effective as an active layering piece; skipping it preserves the vest's ability to move sweat away and trap body heat on chilly hikes.
High dryer heat can collapse the fleece's loft and cause fiber distortion, so air-drying or using the lowest heat setting preserves the plush texture and prevents shrinkage that would tighten the vest's fit; laying it flat while damp also prevents weight-induced stretching common with hanging.
Because polar fleece can stretch under its own weight over time, storing this vest folded rather than hung preserves its tailored shape and prevents the shoulder and hem areas from sagging — a small habit that extends the garment's wearable life noticeably.

Softness and warmth of the fleece

Despite its plush, heat-trapping pile, polar fleece remains highly breathable—allowing excess body heat and moisture to escape during activity—so this vest works comfortably as both a standalone layer on brisk days and as a midlayer under a shell for winter sports.
Polyester fleece is hydrophobic, holding less than 1% of its weight in water and drying quickly, so this vest maintains its soft, lofty insulation and won't feel clammy against the skin even during light rain or sweaty uphill hikes—a key advantage over natural wool for active layering.

Layering performance and breathability

The high neckline extends fleece insulation above the collarbone, bridging the gap between a jacket's collar and the body to block cold air without requiring a separate neck gaiter.
The adjustable waist with interior toggle and elastic hem allow the wearer to cinch the vest close to the body, preventing it from riding up under a pack or outer layer and creating a draft-free seal that improves thermal efficiency.
Two zippered hand pockets and two interior patch pockets offer secure, low-bulk storage for essentials without interfering with layering — the interior pockets also keep items warmer, which can help preserve phone battery life in cold weather.
Unlike down or cotton, polyester fleece retains its warmth even when wet and dries quickly — so wearing this vest as a mid-layer under a shell during active use won't leave you chilled if sweat or light moisture seeps through.
Elastic binding at the arm openings seals out drafts and ensures the vest sits flat under an outer layer, preventing the armholes from gaping and letting warm air escape during movement.
The 100% recycled polyester polar fleece uses the same air-pocket structure as virgin fleece to trap heat close to the body, delivering reliable mid-layer insulation with a reduced environmental footprint.
The arm-free design allows unrestricted movement and eliminates sleeve bulk under a jacket, while the fleece's breathable structure prevents overheating — making it an active mid-layer that warms the torso without trapping heat in the arms.

Recycled materials and sustainability

Even the most conservative independent lifecycle assessment — WRAP (UK) — still measured a 21% CO₂ reduction for recycled polyester, giving this vest a concrete carbon footprint advantage over any virgin-polyester equivalent, on top of the eliminated petroleum input.
Simons’ Vision label requires at least 50% reduced-impact materials versus conventional equivalents, so this jacket’s 100% recycled polyester fleece clears that bar with robust lifecycle advantages — recycled PET uses 45–85% less energy and emits 30–60% less CO₂ than virgin polyester, turning the program from a vague on-tag promise into a measurable environmental gain.
Roughly 98% of recycled polyester fibers originate from post-consumer PET plastic bottles rather than textile waste, so each jacket redirects plastic that would otherwise sit in a landfill for centuries back into a durable, wearable form — and in doing so, eliminates the roughly 1.5 kg of crude oil needed to produce a kilogram of virgin polyester.

Image Analysis

3 images

01: Product
Sleeveless sherpa-style fleece vest in a light cream color with a high stand collar, central full-length zipper with contrasting trim, and zippered hand pockets at the front sides.
Body material and textureThick sherpa or pile fleece fabric with a soft, nubby surface covering the entire visible body of the vest.
1 region
x 0.18 · y 0.14 · w 0.64 · h 0.58 (high)
Color of main bodyUniform light cream/off-white color across the visible fleece panels.
1 region
x 0.20 · y 0.16 · w 0.60 · h 0.56 (high)
Front zipper and trimFull-length centered zipper with a narrow contrasting fabric trim in a muted warm taupe running the zipper line from hem to collar.
1 region
x 0.38 · y 0.14 · w 0.24 · h 0.56 (high)
High stand collarTall stand-up collar in the same cream sherpa material that rises to just below the model's chin.
1 region
x 0.34 · y 0.05 · w 0.32 · h 0.18 (high)
Sleeveless armholesWide sleeveless arm openings with visible inner binding edge in a darker trim that contrasts with the cream fleece.
2 regions
x 0.66 · y 0.24 · w 0.20 · h 0.20 (high); x 0.14 · y 0.24 · w 0.14 · h 0.22 (high)
Zippered hand pocketsTwo front hand pockets with visible zipper openings; pocket zippers sit vertically along side seams and have small cord or tab pulls.
2 regions
x 0.63 · y 0.48 · w 0.16 · h 0.16 (high); x 0.20 · y 0.46 · w 0.16 · h 0.16 (high)
Hem detailStraight hem finished in the same sherpa with a small hardware ring or toggle visible at the lower right hem.
1 region
x 0.60 · y 0.66 · w 0.24 · h 0.12 (medium)
Other
Studio product shot showing a model wearing the vest against a plain light gray background with soft even lighting and minimal shadows.
Model pose and framingThree-quarter frontal view of a model from head to hips; left arm relaxed at side and right hand placed in the right pocket, vest centered in frame.
1 region
x 0.08 · y 0.02 · w 0.84 · h 0.96 (high)
Background and lightingEven soft studio lighting on a plain light gray background with faint shadowing under the model and vest.
Image qualityHigh-resolution photograph with clear focus and accurate rendering of texture and fabric details.
Colors
light cream· main bodywarm taupe· zipper trim and pocket trimlight warm metallic· metal hardware and zipper pulls#CAB29D
02: Product
Rear view of a sleeveless high-pile fleece vest on a model showing the full back panel, stand collar, sleeveless armholes, and straight hem with a visible hem toggle at the left side.
Back panel shapeRectangular back panel with straight side seams and a slightly rounded straight hem, covering the model's upper back down to the top of the hips.
1 region
x 0.18 · y 0.12 · w 0.64 · h 0.70 (high)
Stand collarShort stand collar that continues from the back panel and stands up around the neck, made from the same high-pile fleece.
1 region
x 0.38 · y 0.04 · w 0.28 · h 0.14 (high)
Sleeveless armholesCut-in sleeveless armholes with a narrow exposed inner binding visible at the shoulder edge on the left side of the image.
2 regions
x 0.08 · y 0.18 · w 0.18 · h 0.36 (high); x 0.82 · y 0.20 · w 0.10 · h 0.34 (medium)
Pile textureHigh-pile, plush sherpa-like fleece texture uniformly covering the visible exterior surface.
1 region
x 0.18 · y 0.12 · w 0.64 · h 0.70 (high)
Hem detailStraight hem with a visible small metal ring or toggle and short cord emerging near the lower left side seam.
1 region
x 0.13 · y 0.72 · w 0.14 · h 0.10 (medium)
Other
Studio shot showing a model from the rear with a light neutral background and soft, even lighting; the model's left profile and navy leggings are visible and the image is cropped above the knees.
Viewing angleRear three-quarter view of a model slightly turned to the left, showing the product's back and a small portion of the model's left profile.
Background and lightingPlain light gray background with soft even studio lighting and minimal shadowing under the hem and to the lower left.
Model and stylingFemale model wearing the vest over dark navy fitted leggings; visible hair, left ear with hoop earring, and left hand resting near the hip.
2 regions
x 0.02 · y 0.06 · w 0.34 · h 0.88 (medium); x 0.36 · y 0.68 · w 0.56 · h 0.32 (medium)
Image cropImage is vertically framed showing the model from head to upper thighs; lower legs and feet are outside the frame.
Colors
cream· fleece body and collar#F4ECE3
03: Product
Sleeveless cream-colored plush fleece vest with visible full-length front zipper, beige binding and a zippered vertical side pocket on the visible side.
Body materialThick, plush sherpa-like fleece in a warm cream shade covering the visible front panel and chest area.
1 region
x 0.36 · y 0.20 · w 0.38 · h 0.50 (high)
Front zipper and tapeCenter front exposed zipper with pale beige fabric tape running the full visible length of the vest; zipper teeth and pull visible near hem.
1 region
x 0.41 · y 0.24 · w 0.14 · h 0.54 (high)
Side zip pocketVertical zip pocket on the model's right side of the vest with a narrow beige binding and a visible metal zipper pull.
1 region
x 0.62 · y 0.43 · w 0.11 · h 0.18 (high)
Armhole and shoulder constructionSleeveless armhole with a slightly rounded shoulder opening edged in the same beige binding as the zipper tape; the shoulder area shows the fleece folded toward the binding.
2 regions
x 0.60 · y 0.18 · w 0.18 · h 0.16 (high); x 0.36 · y 0.18 · w 0.20 · h 0.16 (medium)
Hem detailStraight hem with a small beige cord loop or toggle visible at the lower right hem edge.
1 region
x 0.73 · y 0.71 · w 0.06 · h 0.06 (medium)
Other
Studio lifestyle shot of a model wearing the vest over a navy hoodie, with a pale yellow knit beanie; white background and soft even lighting.
Model stylingFemale model wearing a navy hooded sweatshirt under the vest and a pale yellow ribbed knit beanie.
1 region
x 0.22 · y 0.06 · w 0.56 · h 0.36 (high)
PropModel holds a brown bag with a white folded cloth visible at the lower left of the frame.
1 region
x 0.03 · y 0.79 · w 0.28 · h 0.20 (medium)
Background and lightingNeutral light gray to white seamless studio background with soft, diffuse lighting and minimal shadows.
Crop and compositionThree-quarter view crop from upper thighs to top of head, model angled slightly to viewer right, vest shown on its left side more prominently.
Colors
warm cream· fleece bodypale beige· binding and zipper tape

Documents & Data

Q&A

1 answered

Does this vest run true to size, or should I size up/down for a relaxed fit?: We don't have specific sizing feedback for this vest, but it features an adjustable waist with an inner toggle and elastic trimmed edging, which allows for some fit customization. For a relaxed fit, consider sizing up if you prefer more room; otherwise, we recommend sticking with your usual size for a trimmer layering piece.

Reddit Insights

1 threads · r/UltralightCanada

A single user asked if a down jacket was lighter than I.FIV5 jackets from Simons, but received no answer.

neutral sentiment20% match

No opinion expressed; only a question.

Themes

Weight comparisonneutral

Community Q&A

Are I.FIV5 jackets lighter than the Decathlon down jacket?: Unknown (no reply).

Compared To

vs Decathlon Trek 100 down jacket

User asked if the down jacket is lighter than I.FIV5 jackets.

Source Threads

Weight comparison question about I.FIV5 jackets
Anyone know if these are lighter than the recycled nylon I.FIV5 jackets from Simons?
u/[deleted]r/UltralightCanadaView thread →

Provenance

Merchant Link: https://www.simons.ca/en/women-sportswear/coats-vests/jackets-vests/ultra-soft-sleeveless-polar-fleece-jacket--11318-230568?colourId=0
Updated: July 31, 2026