Lightweight running cap product image (primary)
A light blue lightweight running cap shown from a three-quarter front-right angle with a curved brim, stitched panel construction, perforated side panel, and a small dark logo on the front-right panel.

On

Lightweight Running Cap

4/5 (1)
CA$55.00CAD
In Stock

The On Lightweight Running Cap is a lightweight, quick-dry five-panel running hat made from recycled polyester ripstop fabric, with laser perforations on the sides for breathability. It features a curved rigid brim, an adjustable strap with clip closure, and a reflective logo. Intended for running and high-output activities, it is praised for its durability and comfortable low-profile fit, though the rigid brim is not foldable for packing.

Material
recycled polyester
Style
activewear, technical, sporty
Category
Sporting Goods > Athletics > Track & Field

Specifications

Lightweight running cap made from recycled polyester with quick-dry ripstop fabric, laser perforations, curved rigid peak, adjustable strap, and reflective logo.

Quick-dry ripstop fabric, recycled polyester, laser perforations for ventilation, curved rigid peak, adjustable strap with clip closure, reflective logo for visibility.

Material
recycled polyester
Style
activewear, technical, sporty
Occasion
workout, sports-event
Gender
male
Age Group
adult
Condition
new
Category
Sporting Goods > Athletics > Track & Field

Additional Attributes

  • lightweight
  • quick-dry
  • ripstop fabric
  • recycled polyester
  • laser perforations
  • curved rigid peak
  • adjustable strap with clip closure
  • reflective logo

Product Insights

On's lightweight running cap is a structured, breathable choice for hot runs, using a rigid curved brim and laser-perforated panels to hold its shape and vent heat while a recycled-polyester shell and recycled sweatband manage sweat. Its 49 g weight makes it light among structured caps, though not as feathery as the 29 g Janji AFO Hyperlight, and that rigid brim and non-crushable construction make it less packable than rivals. The rear clip closure tucks its tail away but cannot be cinched blindly mid-run, a drawback when wind shifts, and the one-size 55–60 cm fit puckers on smaller heads—unlike OR Swift's true S/M and L/XL. Care is limited to warm hand-wash and air-dry to preserve the brim and perforations, and while the front logo reflects low light, side and rear visibility require extra gear. Priced at CAD 55 with a US$45 spec, it faces cheaper alternatives like 2XU's US$25 final sale or the UPF 30 DWR-equipped OR Swift Ultra Light, making it a deliberate pick for those who value secure fit and sweat management in a shape-holding cap over packability, easy mid-run adjustment, or sun-protection coverage.

Verified claims

Brim
Rigid curved brim holds shape but won't fold or stuff like Janji or OR packable caps
Weight
Weighs 49 g — lightest structured cap tested — while Janji AFO Hyperlight is 29 g
Fit
One-size 55–60 cm cap puckers in back for small heads; OR Swift offers true S/M and L/XL
Closure
Clip strap tail tucks away but can't be cinched blindly mid-run like velcro
Sweat management
Buyers report it handles long, hot runs while staying light and breathable
Value
Lists at CAD 55 (US$45 spec) while 2XU's Light Speed final sale is US$25
Sun protection
Open weave gives lower UV shielding; OR Swift Ultra Light is the UPF 30 and DWR option
Reflective logo
Front logo reflects in low light; rear and side visibility still needs separate gear
Ventilation
Laser-perforated side panels vent heat and stay intact through warm hand washing.
Strap tail
Tail of the tightening strap tucks into a rear compartment, leaving no flapping webbing.
Backwards wear
Worn backwards, the fabric band at the rear closure sits on the forehead and keeps sweat off the face.
Packability
The 49 g non-crushable cap is less packable than the 29 g Janji AFO Hyperlight
Care
Care label allows only warm hand-wash and air-dry; machine washing and heat drying are not authorized.
Durability
Hand washing and air-drying preserve the rigid brim's curve and keep the perforation edges from stretching or fraying.
Breathability
Manages sweat during hot runs through laser perforations and quick-dry fabric.
Wind adjustment
Buyers report the rear clip is hard to adjust when wind changes mid-run.
Material
Shell is 100% recycled polyester; sweatband is 60% recycled polyamide, 27% polyester, 13% elastane.

Product record

Title
Lightweight Running Cap
Brand
On
Price
55 CAD
Availability
Out of stock
Rating
1 reviews

Image Analysis

2 images
Lightweight running cap product image (primary)
01

Product

A light blue lightweight running cap shown from a three-quarter front-right angle with a curved brim, stitched panel construction, perforated side panel, and a small dark logo on the front-right panel.

  • Overall shapeFive-panel style cap with a low-profile rounded crown and a smoothly curved brim extending front-left from the crown.
    1 regionx 0.06 · y 0.28 · w 0.88 · h 0.56 (high)
  • BrimSingle-piece curved brim with a smooth, slightly textured fabric surface and a thin stitched edge; brim projects forward and casts a shadow beneath.
    1 regionx 0.06 · y 0.62 · w 0.66 · h 0.30 (high)
  • Panel seams and constructionVisible stitched seams dividing the crown into panels including a horizontal seam across the front panel and vertical/top seams joining panels.
    1 regionx 0.18 · y 0.26 · w 0.62 · h 0.46 (high)
  • Perforated side panelRight-side panel has an array of regularly spaced round perforations forming a grid that exposes a darker interior or backing.
    1 regionx 0.68 · y 0.38 · w 0.22 · h 0.30 (high)
  • LogoSmall vertically oriented dark two-character logo printed on the front-right panel near the perforated area.
    1 regionx 0.56 · y 0.46 · w 0.07 · h 0.10 (high)
  • Fabric textureSmooth woven synthetic fabric with a fine, slightly pebbled texture visible on crown and brim; fabric panels appear bonded or topstitched at seams.
    1 regionx 0.20 · y 0.30 · w 0.60 · h 0.45 (high)

Other

Studio product shot on a uniform light grey background with soft front lighting creating subtle shadow under the brim; image shows slight right-side shadow on surface.

  • Background and lightingEven light grey background with soft diffuse lighting from front-left and a soft shadow cast beneath and slightly to the right of the brim.
  • Shot compositionThree-quarter front-right product view occupying the lower two thirds of the frame, centered horizontally with generous top margin.

Colors

light sky blue· crown and brim#95C5F1dark grey· perforation interior#5E5E5Eblack· logo#343534
Lightweight running cap product image 2
02

Product

Rear three-quarter view of a lightweight running cap showing the back opening with adjustable strap, perforated side panel, curved visor, panel seams, and textured woven fabric.

  • Overall shapeFive-panel style cap shown from a rear three-quarter angle with a low crown and a curved visor projecting forward at right of image.
    1 regionx 0.18 · y 0.30 · w 0.72 · h 0.50 (high)
  • Fabric textureLight woven ripstop-like fabric with a subtle grid texture visible across the crown and visor surface.
    1 regionx 0.22 · y 0.30 · w 0.55 · h 0.40 (high)
  • Perforated side panelRight-side panel contains multiple regular circular perforations arranged in horizontal rows forming a vented area.
    1 regionx 0.50 · y 0.46 · w 0.38 · h 0.30 (high)
  • VisorCurved visor in the same light-blue fabric visible at right, with smooth top surface and stitched edge.
    1 regionx 0.72 · y 0.56 · w 0.26 · h 0.20 (high)
  • Rear opening and interiorBack opening shows inner band and short interior shadowed area where head would fit; opening edged by stitched hem.
    1 regionx 0.08 · y 0.62 · w 0.22 · h 0.18 (high)
  • Adjustable strapBlack woven webbing strap threaded through a dark plastic adjustment buckle across the back opening.
    1 regionx 0.04 · y 0.66 · w 0.30 · h 0.18 (high)
  • Plastic buckleRectangular dark plastic ladder-style buckle attached to the black strap, with visible molded detail on its face.
    1 regionx 0.04 · y 0.66 · w 0.12 · h 0.16 (high)
  • Panel seamsVisible stitched seams run from crown toward the rear opening and along the edge of the perforated panel joining panels.
    1 regionx 0.30 · y 0.28 · w 0.48 · h 0.44 (high)

Other

Studio shot on a smooth light gray background with soft diffuse lighting and a soft shadow beneath the cap; image is well centered and uncropped.

  • Background and lightingEven neutral light gray studio background with soft, diffuse illumination producing a faint soft shadow under the cap to the lower right.
    1 regionx 0.00 · y 0.00 · w 1.00 · h 1.00 (high)
  • Shot compositionRear three-quarter product view placed slightly left-of-center in frame with visor pointing toward right edge.
  • ShadowSoft shadow visible beneath and to the right of the cap, consistent with overhead lighting.
    1 regionx 0.40 · y 0.68 · w 0.46 · h 0.22 (high)
  • Image qualityHigh-resolution, evenly focused image showing clear texture and stitch detail.

Colors

light sky blue· crown and visor#94C4F2black· adjustable strap#0E0E11dark charcoal· buckle#2A2A2D

Brand PDP Lookup

Brand
On

Lightweight Cap: Sweat-Wicking Ventilated Running Cap

Variants

3 SKUs
All variants of Lightweight Running Cap
SKUTitlePriceAvail
4473087Lightweight Running Cap - One SizeCA$55.00Out of Stock
4473088Lightweight Running Cap - One SizeCA$55.00Out of Stock
4749301Lightweight Running Cap - One SizeCA$55.00Out of Stock

Documents & Data

Customer Reviews

1 total
4

1 reviews · out of 5

Légère et confortable

Lucie D.

Légère et confortable

Reddit Insights

3 threads · r/runningfashion

Reddit users consistently praise the On Lightweight Running Cap for its exceptional lightweight feel, comfort, and durability, often preferring it over other popular brands.

positive sentiment70% match

All mentions are positive, with users stating it is the 'GOAT' and 'best I've tried'. Only minor drawbacks mentioned include a stiff brim and potential sizing changes.

Themes

Lightweight and comfortablepositive
Durabilitypositive
Comparison to Cielepositive
Brim stiffnessmixed
Design changesneutral

Use Cases

  • Running in various conditions, including long distances and hot weather

Watch Out For

mediumThe brim is stiff and cannot be folded, making it less packable.
lowRecent design changes may result in a smaller fit.

Compared To

vs Ciele

The On cap is often preferred over Ciele for being lighter, more durable, and staying like new longer, though it lacks the ability to fold.

Source Threads

  • User declares On lightweight cap as the greatest of all time

    I like my ciele but my ON lightweight cap is the GOAT

    u/DaijoubuKiramekir/runningfashionView thread →

  • User confirms On cap is extremely durable and lightweight

    2nd the On running cap. Very light and is the most out of the way hat I’ve owned. Taped seems are a nice touch. 5 years of abuse and it’s still going strong.

    u/x_Oathkeeper_xr/runningfashionView thread →

  • User rates On lightweight cap as best, notes stiff brim

    On lightweight cap is the best I've tried But the brim is stiff so it won't fold up, if that matters I like it better than my ciele and after 1 year using it still looks brand new Last blackfriday was half price

    u/DaijoubuKiramekir/runningfashionView thread →

Provenance

Merchant Link
https://www.simons.ca/en/men-sports-clothes/activewear-accessories/caps/lightweight-running-cap--17575-26111?colourId=0
Updated