Most singlet sizing mistakes happen for one reason. Parents and wrestlers shop by shirt size, and singlets are not sized that way. A wrestling singlet is sized by body weight, because weight predicts how the compression fabric stretches across the torso and hips better than a chest measurement does.
The Adidas AS102s 3-Stripe wrestling singlet is one of the most common competition singlets in the sport, and Adidas publishes a clean weight range for every size. This guide walks through the full chart, how the fit actually feels, and how to decide when a wrestler sits between two sizes.
The Adidas AS102s size chart
Every size below is defined by the wrestler's body weight. These are the current ranges on the AS102s.
| Size | Body weight |
|---|---|
| Youth Small | 43 to 60 lbs |
| Youth Medium | 61 to 80 lbs |
| Youth Large | 81 to 95 lbs |
| Adult XS | 90 to 110 lbs |
| Adult Small | 111 to 130 lbs |
| Adult Medium | 131 to 150 lbs |
| Adult Large | 151 to 185 lbs |
| Adult XL | 186 to 220 lbs |
| Adult 2XL | 221 to 250 lbs |
| Adult 3XL | 251 to 300 lbs |
Start with the wrestler's current weight, not the weight class they plan to reach. A singlet bought for a cut that has not happened yet fits wrong at the first competition of the season, which is exactly when it matters.
How the AS102s actually fits
The AS102s is built from nylon performance Lycra. It is a true compression fit: snug through the chest and hips, with trimmed neck and arm openings and hemmed legs that hold position on the thigh. On the mat that means nothing rides up, nothing bunches in a tie-up, and there is no loose fabric for an opponent to catch.
If a wrestler has never worn a competition singlet, the correct fit feels tighter than they expect. The fabric should sit flat against the skin everywhere with no gaps at the leg openings and no sag in the trunk. Loose is wrong. A singlet that wrinkles or pools fabric at the lower back is a size too big.
Between sizes: which way to go
The weight ranges do most of the work, but wrestlers land on the borders all the time. Use these rules.
On the top edge of a range: If a wrestler weighs 150 and is still growing, the Medium tops out at 150 and the Large starts at 151. Take the Large. The Lycra recovers well, so the larger size still compresses, and it survives the growth that is coming during the season.
On the bottom edge of a range: Stay in the smaller size. A 111 lb wrestler fits the Small correctly. Sizing up from the bottom of a range produces sag, and sag is both a distraction and a grip point.
Tall and lean builds: Torso length is the constraint, not weight. If a wrestler is unusually tall for their weight and the singlet pulls hard at the shoulder straps, go up one size. Strap tension that digs into the shoulders means the trunk is too short.
Youth versus adult sizing
Note the overlap in the chart. Youth Large covers 81 to 95 lbs and Adult XS covers 90 to 110 lbs. A wrestler between 90 and 95 lbs can wear either. The practical difference is cut: the youth sizes are cut for a shorter trunk and narrower shoulders. A 92 lb middle schooler with a compact build usually fits the Youth Large better. A 92 lb wrestler who is tall and still filling out is better served by the Adult XS, and it leaves room for the next 15 lbs.
Colors and team orders
The AS102s runs the classic Adidas three-stripe trim along the seams and comes in a wide colorway set: Athletic Gold/Black, Black/White, Grey/Black, Maroon/White, Orange/Black, Purple/White, Red/Black, Red/White, Royal Blue/Athletic Gold, Royal Blue/White, and Navy/White. That range is why it shows up so often as a team singlet: most school color combinations have a direct match. All sizes and colors run the same price, currently $49.99. Navy/White is sold out as of this writing, so navy teams should check availability before building an order around it.
For uniform rules, the safe answer is the boring one: singlet legality is governed by your state association and event rules, so confirm current uniform requirements with your coach or the event before competition rather than assuming.
Care: make it last the season
Lycra keeps its compression when it is treated right. Wash cold after every wearing, skip fabric softener, and hang dry. A dryer on heat is what kills the stretch and fades the color. Treated this way, one AS102s handles a full season of practices and tournaments without losing its shape.
Sizing the rest of the gear bag follows the same logic: measured, not guessed. Our wrestling shoe fit guide covers sizing by brand, and the headgear collection covers the other required piece of the uniform.
FAQ
What size Adidas singlet does a 140 lb wrestler need?
Adult Medium. The Medium covers 131 to 150 lbs, so 140 sits in the middle of the range, which is the ideal position: full compression with room for normal weight movement during the season.
Do Adidas wrestling singlets run small?
They run snug by design, not small. The AS102s is a compression garment, and the weight chart already accounts for that. If you order by the wrestler's actual weight, the fit is correct. It only feels small when someone orders by shirt size instead of body weight.
Is the AS1025 the same as the AS102s?
Yes. AS1025 is a common misreading of the style code aS102s, where the final letter s gets read as the number 5. Searches for AS1025 and AS102 point to the same 3-Stripe singlet covered in this guide.
Can a youth wrestler wear an adult XS?
If they weigh at least 90 lbs, yes. Youth Large and Adult XS overlap between 90 and 95 lbs. Pick by build: compact wrestlers fit the youth cut better, taller wrestlers who are still growing get more season out of the Adult XS.
What do wrestlers wear under a singlet?
Most wear compression shorts or a compression brief underneath. Whatever is worn under it should be snug and seamless so it does not bunch under the Lycra. Check your team and event rules for any specific undergarment requirements.
Weigh the wrestler, read the chart, and order the Adidas AS102s once, in the size that competes.
