
Interval Short
The lined/unlined training short is the piece Ten Thousand built its reputation on, engineered for durability across lifting, running and everything between.
1 live now · from $47
Explore Interval Short →Brand profile
Direct-to-consumer men's training apparel brand known for its performance shorts, technical tees and a deliberately narrow, durability-focused product line.
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The line stays deliberately narrow — lined and unlined training shorts, technical tees, joggers and midweight hoodies — rather than a full seasonal range.
Pieces are developed around durability and muted colorways, so the range changes little from year to year instead of following fashion cycles.
Sold direct online, funded by a $21.5 million Series A led by Provenance, with a sponsorship deal placing the brand alongside Life Time gyms.

The lined/unlined training short is the piece Ten Thousand built its reputation on, engineered for durability across lifting, running and everything between.
1 live now · from $47
Explore Interval Short →
A heavier-duty technical tee and long sleeve built to survive years of training rather than a single season, embodying the brand's durability-over-fashion ethos.
2 live now · from $23
Explore Durable Shirt →
The Tactical line extends the brand's training-grade construction into pants and shorts with pockets and structure for use beyond the gym.
4 live now · from $65
Explore Tactical line →Available atUrbanCred
Overall fit
true to size
Most buyers report Ten Thousand runs true to size with an athletic-but-wearable cut, sized for training rather than a fashion-slim silhouette.
Tip: Order your usual size; size up only if you carry extra size in the chest, thighs or want a looser, layer-friendly fit.
Medium confidence · based on 14 sources
By category
| Category | Runs | Shape | Size advice |
|---|---|---|---|
| Hoodies & sweatshirts | true to size | regular to lightly relaxed midweight fit, roomy in the shoulders | Stick with your usual size; it already has enough room to layer over a tee. |
| Trousers & pants | true to size | athletic jogger cut, easy through the seat and thigh with a taper below the knee | Order your normal waist size and check inseam options if you're under about 5'8". |
| T-shirts & graphic tees | true to size | athletic fit with a slight taper; the heavier durable-style tees read a bit boxier and more relaxed | Take your normal size for a training fit, or size up one if you prefer tees to drape loosely. |
Directional fit consensus summarized from public sources with AI — a starting point, not a guarantee. Confirm with the product's own measurements before buying.
85% matchSame men's-only technical training staples, dressier lean
What changes: Broader work-to-workout range plus retail stores
78% matchSofter surf-coast knits over hard-training performance
What changes: Lifestyle athleisure rather than gym-first durability
74% matchDTC performance-fabric basics, drawer-first not gym-first
What changes: Underwear and loungewear core, no training gear
72% matchProprietary-fabric training kit with a big men's line
What changes: Women-led brand, higher price, huge store network
Ten Thousand fits true to size. Order your usual size; size up only if you carry extra size in the chest, thighs or want a looser, layer-friendly fit. Most buyers report Ten Thousand runs true to size with an athletic-but-wearable cut, sized for training rather than a fashion-slim silhouette.
Most buyers report Ten Thousand runs true to size with an athletic-but-wearable cut, sized for training rather than a fashion-slim silhouette. Overall shape: athletic-regular — trim through the chest and waist without being compression-tight.
Ten Thousand hoodies & sweatshirts fits true to size. Stick with your usual size; it already has enough room to layer over a tee. Shape: regular to lightly relaxed midweight fit, roomy in the shoulders.
Ten Thousand trousers & pants fits true to size. Order your normal waist size and check inseam options if you're under about 5'8". Shape: athletic jogger cut, easy through the seat and thigh with a taper below the knee.
Ten Thousand t-shirts & graphic tees fits true to size. Take your normal size for a training fit, or size up one if you prefer tees to drape loosely. Shape: athletic fit with a slight taper; the heavier durable-style tees read a bit boxier and more relaxed.
Ten Thousand makes men's training apparel sold direct-to-consumer, founded in early 2017 by Keith Nowak, a former professional soccer player in Italy's Serie C who previously ran seed and Series A investing for a family office. The range stays deliberately narrow: lined and unlined training shorts, technical tees, joggers and midweight hoodies in muted colorways, developed around durability rather than seasonal fashion. The company raised a $21.5 million Series A led by Provenance, with Alfa and Fernbrook participating, alongside a sponsorship deal with Life Time gyms.