Sourcing Apparel for a US Gym or Fitness Brand
By The Velocity Wear Team
Fitness merchandise splits cleanly into two products that get treated as one. There is the shirt somebody buys because they like the gym and wears to brunch, and there is the shirt somebody trains in three times a week. They want different fabrics, different construction and different decoration, and a brand that makes only the first is leaving the more valuable business alone.
The fabric decision comes first
Cotton absorbs and holds moisture. It is comfortable, it prints beautifully, and it is genuinely unpleasant to train in once it is wet. Polyester and poly blends wick and dry, which is why performance apparel is built on them, and they feel less soft in the hand at the same price.
The compromise most fitness brands land on is a tri-blend or a poly-cotton for lifestyle pieces and a full performance knit for training pieces. Two products, honestly described, rather than one product doing both jobs badly.
Why decoration changes with the fabric
This is the part that catches brands out. Standard plastisol screen printing on polyester can suffer from dye migration — the garment's own dye lifts into the ink over time and a white print on a red shirt turns pink weeks after delivery. It is a real, well-known phenomenon and the fix is a low-bleed ink system and correct curing, which has to be specified.
Sublimation avoids it entirely by dyeing the fibre rather than sitting on it, which is why it dominates jerseys and performance kit. The trade-off is that it only works on light polyester, so a sublimated design cannot be put on a black cotton tee. Full coverage is possible, edge to edge, with no hand feel at all — which for training wear is a genuine functional advantage as well as an aesthetic one.
What a gym actually needs
- A training tee in a performance knit, decorated in a way that survives repeated hot washing. This is the repeat purchase.
- A heavier lifestyle piece — a hoodie or a heavyweight tee — which is the higher-margin item and the one that does the marketing when it is worn outside.
- Something for staff and coaches that is visibly not the same as the member product. Distinction matters in a gym.
- A low-commitment entry item. A cap or a beanie converts people who will not spend on apparel yet.
Sizing for this audience
A gym membership base is not a general population sample and its size curve reflects that. Strength-focused facilities skew large, and a standard curve will leave you sold out of XL and XXL with a stack of smalls. Endurance and studio-focused audiences skew the other way.
You have an advantage here that most brands do not: you know your members. Look at the actual population before ordering rather than importing a generic split, and use mixed sizes inside the 20-piece minimum to reflect it.
The ordering pattern that works
Gyms consistently over-order the first time and then never reorder, ending up with a box of last year's design in the office. The better pattern is small runs tied to something — a challenge, an anniversary, a new location, a seasonal programme — because a garment attached to an event sells to the people who were there and stops competing with itself.
Twenty pieces per design makes that viable. A design tied to a six-week programme does not need a two-year inventory position behind it, and production at 10 to 15 working days from artwork approval means it can be planned to the programme rather than the other way round.
