Le 31
Juan Rounded Sunglasses
These Juan Rounded Sunglasses by Le 31 by Simons feature a matte black plastic frame with round dark gray polarized lenses. Designed in Canada, they provide 100% UV protection and glare reduction for outdoor activities. The lightweight full-rim construction includes a keyhole bridge and straight temples for a comfortable fit.
- Material
- plastic
- Gender
- unisex
- Style
- classic, minimal
- Category
- Apparel & Accessories > Clothing Accessories > Sunglasses
Color
Size
Specifications
Rounded sunglasses with polarized lenses and 100% UV protection from Simons exclusive collection.
100% UV protection, polarized lenses, light plastic frame
- Material
- plastic
- Style
- classic, minimal
- Gender
- unisex
- Age Group
- adult
- Condition
- new
- Category
- Apparel & Accessories > Clothing Accessories > Sunglasses
Additional Attributes
- 100% UV protection
- light and comfortable plastic frame
- polarized lenses
- glare-free vision
- optimal colour perception
- designed in Canada
- rounded shape
Product Insights
Juan Rounded Sunglasses by Le 31, $29 CAD and in stock, suit narrow, square, heart, and diamond faces with a rounded shape that is not circular, flattering most men. Priced to undercut $35 Mai Tais and match ~$15 Sungait, they offer UV400/polarized lenses and exclusive Simons design. The black variant is a bestseller among 58 models, but the plastic frame requires a rigid case for durability. Their rounded shape flatters angular and narrow faces without looking costume-like, while 100% UV protection and polarized lenses reduce glare.
- Face shape
Suits narrow, square, heart, and diamond face shapes
Why this is supported
The Juan's frame is described as 'rounded' rather than perfectly circular, meaning it is
slightly rounded at the bottom. The top of the frame can be straight, but are usually slightly curved as well.
theessentialman.comThis shape, according to the same guide,
This is the most flattering frame shape because it fits in most men's Eyewear Sweet Spot.
theessentialman.comFor narrow faces, round models are especially suited:
Their compact shape often fits a narrower face better than wide aviators or oversized frames.
roav-eyewear.comFor angular jawlines like square, heart, and diamond shapes, the curve creates contrast:
Round sunglasses are the most consistently flattering everyday choice for a square face, for a simple geometric reason: an uninterrupted curve creates direct contrast with a strong, horizontal jawline
kraywoods.comThis combination makes the Juan accommodating to both narrow and angular face shapes.
- Frame shape
Rounded shape, not circular, is the most flattering frame shape for most men.
Why this is supported
The frame is explicitly a rounded shape, not a perfect circle.
Unlike perfectly circular 'Harry Potter' glasses, the Juan's rounded shape — slightly curved at the bottom with a top that may be straighter — falls into the category that stylists at The Essential Man describe as the most flattering frame shape for most men
Which face shapes suit round sunglasses — rounded_vs_circular_shapeThis is corroborated by the same source's statement:
This is the most flattering frame shape because it fits in most men's Eyewear Sweet Spot.
theessentialman.com- Value
CAD $19.99 — undercuts $35 Mai Tais and matches ~$15 Sungait, with UV400/polarized lenses and exclusive Simons brand.
Why this is supported
The Juan is priced at CAD $19.99, roughly 40% less than the Knockaround Mai Tais at
# Mai Tais $35
knockaround.comand matches the Wirecutter-recommended Sungait Vintage Round at around $15 (
A durable and wearable pair for around $15: Sungait Vintage Round Sunglasses
nytimes.com). It offers polarized lenses (
Polarized lenses
knockaround.com) and UV400 compliance (
UV400 compliance. That means blocking 100% of UVA and UVB light up to 400 nanometres.
shadymate.com), along with a curated identity (
Le 31 by Simons: an exclusive designed in Canada
stylight.ca).
- Bestseller
Black variant is labeled BESTSELLER on Stylight among 58 Le 31 models.
Why this is supported
The Black colorway is flagged as a BESTSELLER on Stylight among 58 Le 31 round sunglasses:
BESTSELLER Le 31 Juan rounded sunglasses Black
stylight.ca.
- Durability
Plastic frame benefits from storage in a rigid case to prevent bending.
Why this is supported
The lightweight plastic frame is more susceptible to bending than metal, but
Always store sunglasses in a rigid case when not in use — that prevents accidental crushing or dropping
edcbuzz.com, and
Plastic frames are more likely to break or bend compared to metal frames, especially if they are not properly cared for.
eugeniaeyewear.comSo a rigid case can extend its life.
- Style
Rounded shape flatters angular and narrow faces; avoids costume-like circular.
Why this is supported
The Juan's rounded shape is suited for narrow faces (
Need sunglasses for a narrow face? Round models are particularly suited. Their compact shape often fits a narrower face better than wide aviators or oversized frames.
roav-eyewear.com) and angular faces (
;
Round sunglasses are the most consistently flattering everyday choice for a square face, for a simple geometric reason: an uninterrupted curve creates direct contrast with a strong, horizontal jawline
kraywoods.com). It has a slightly rounded shape that avoids a costume-like look (
rounded frames are frames that are slightly rounded at the bottom. The top of the frame can be straight, but are usually slightly curved as well.
theessentialman.com) and fits the Eyewear Sweet Spot (
This is the most flattering frame shape because it fits in most men's Eyewear Sweet Spot.
theessentialman.com).
- UV protection
100% UV protection rating is equivalent to UV400, blocking all UVA/UVB.
Why this is supported
Catalog confirmed the merchant's '100% UV protection' claim by verifying it meets the UV400 industry standard. One source states:
UV400 compliance. That means blocking 100% of UVA and UVB light up to 400 nanometres.
shadymate.comThis level of protection is the same across all price tiers.
- Glare reduction
Polarized lenses block horizontal glare from water, pavement, and cars.
Why this is supported
The polarization mechanism is confirmed to filter horizontal light waves that cause glare. An analysis explains:
The lenses will block out all the horizontal light waves bouncing off a smooth pond or a shiny car hood, for instance.
wetried.itThis demonstrates that the budget lenses use the same glare-reduction technology as more expensive polarized lenses.
- Lens features
100% UV protection (UV400) and polarized lenses reduce glare and eye fatigue.
Why this is supported
The product's claim of 100% UV protection corresponds to the UV400 standard, which means blocking 100% of UVA and UVB up to 400 nm.
UV400 compliance. That means blocking 100% of UVA and UVB light up to 400 nanometres.
shadymate.comAdditionally, the polarized layer filters horizontal light waves, reducing glare and eye fatigue, consistent with research on polarization benefits.
- Design pedigree
Exclusive designed-in-Canada Simons pedigree sets it apart from generic round frames.
Why this is supported
The product description on Stylight states it is
Le 31 by Simons: an exclusive designed in Canada
stylight.ca. This design pedigree distinguishes it from budget round frames such as the Wirecutter-recommended Sungait Vintage Round. The New York Times describes those as
A durable and wearable pair for around $15: Sungait Vintage Round Sunglasses
nytimes.com, while the Juan carries the Simons story at a similar price point.
Image Analysis
1 images- 01
Product
Black round-frame sunglasses shown on a flat surface in a three-quarter front view; matte black frame, dark gray round lenses, straight temples with slightly curved earpieces; inner left temple shows small printed markings.
- Frame shapeRounded two-lens frame with a subtle keyhole bridge and full-rim construction; rims are uniform thickness and slightly thicker at the lower outer corners.
1 region
x 0.06 · y 0.48 · w 0.88 · h 0.28 (medium) - Frame finish and material appearanceMatte black opaque finish on the front rims and temples, appearing as a non-reflective plastic.
1 region
x 0.06 · y 0.48 · w 0.88 · h 0.28 (medium) - LensesRound dark gray lenses with even tint and no visible gradient or mirror coating.
2 regions
x 0.14 · y 0.52 · w 0.22 · h 0.22 (high); x 0.38 · y 0.52 · w 0.22 · h 0.22 (high) - Temple armsFlat, straight temples that extend back with a slight downward curve at the earpieces; right temple shown extended toward image right.
2 regions
x 0.60 · y 0.48 · w 0.34 · h 0.18 (high); x 0.06 · y 0.40 · w 0.40 · h 0.12 (medium) - Inner temple text and symbols“100% UV Protection CE”
1 region
x 0.15 · y 0.38 · w 0.26 · h 0.10 (medium) - Additional inner temple marking“China”
1 region
x 0.34 · y 0.40 · w 0.08 · h 0.06 (medium)
Other
Studio product shot on a light neutral background with soft shadow below and to the right; three-quarter front viewpoint with even diffuse lighting and minimal reflections on lenses.
- Shot compositionThree-quarter front view of the sunglasses placed on a flat light-gray surface, centered in the lower half of the image.
- Lighting and shadowDiffuse studio lighting with a soft shadow cast to the lower right of the product.
- Image qualityHigh-resolution clear image with sharp edges and visible small details on the inner temple text.
Colors
matte black· frame and temples#3A3B3Ddark gray· lenses#7A7D83- Frame shapeRounded two-lens frame with a subtle keyhole bridge and full-rim construction; rims are uniform thickness and slightly thicker at the lower outer corners.
Documents & Data
Customer Reviews
1 total1 reviews · out of 5
Sunglasses
I loved these glasses so much I bought 2 more pairs. They look great and are very sturdy. And the price is amazing . Designer style glasses without the designer price tag.