
Shown: Forest Green. Pick any color below to see it here.
Sport-Tek · Style ST550
Sport-Tek ST550 contract embroidery
The ST350 tee fabric cut as a polo. Same light interlock, same wicking, same color lock, for team and staff programs that need a collar without losing the performance feel.
- 3.8 oz, 100% polyester interlock with PosiCharge technology
- Moisture-wicking, smooth interlock face
- Flat knit collar, taped neck, 3-button placket, removable tag for relabeling
- Blind shipped under your label, blanks yours or ours
Real numbers back the same business day, not a range.
Pick your ST550 colors
Every color we run on this blank. Click one to see it on the garment. Your picks drop straight into the quote form below.

Shown: Forest Green
Current stock position and the full color card on request. Mixing colors inside one run does not change the setup, so it does not change your price.
Get contract pricing on your ST550 run
Quantity, decoration and the date it has to land. Real numbers back the same business day, not a range.
Sport-Tek ST550 specs
| Style number | Sport-Tek ST550 PosiCharge® Competitor™ Polo (SanMar) |
|---|---|
| Fabric | 100% polyester interlock with PosiCharge technology |
| Weight | 3.8 oz/yd² |
| Details | Moisture-wicking, flat knit collar, taped neck, 3-button placket with dyed-to-match buttons, removable tag |
| Colors | 16 |
| Sizes | Full adult size run; tell us your sizes and we confirm live stock |
| Blanks | Ship yours in, or we source through our distributor accounts |
How the ST550 decorates
The part most contract shops leave out of the quote.
Smooth interlock face
Denser and smoother than mesh, so embroidered logos sit flat and printed logos hold detail.
Color that stays put
PosiCharge locks the garment color through commercial washing, team maroon stays team maroon.
Poly handled properly
Like every 100% polyester piece here, it gets low-temperature finishing and low-bleed process on any printed decoration. The fabric demands it; we deliver it.
ST550 questions from resellers
What is the minimum order on ST550 polos?
24 pieces, with no setup fees. Mix colors and sizes inside that 24 with the same logo.
ST550 or ST640?
Same price class, different fabric. The ST550 interlock is smoother and a touch dressier; the ST640 mesh is the maximum-airflow pick. Outdoors all day, take the 640; front of house, take the 550.
Does it match the ST350 tee?
Yes, same fabric family and PosiCharge color system. Players in tees, coaches in polos, one color, one order.
Can you put ours labels in it?
Yes, the tag is removable, so relabeling with your own brand is straightforward.
Will it fade or shrink?
PosiCharge locks the color and polyester barely shrinks. Wash cold, skip softener, dry low.
Do I ship blanks in, or do you source them?
Either one. We are a SanMar PSST decorator, so you can order on your own account and have blanks ship freight-free with no minimum to our dock. If you would rather not carry the blanks, we source and bill them through.
Will the order ship blind under my label?
Yes. Your packing slip, your label, nothing of ours in the box. We can drop ship to your client or straight to their end customer.
Ready to price the run?
24-piece minimum. No setup fees on screen print. Same-day quotes on weekdays from a floor that runs this blank every week.
Working a different spec? See every blank we run, contract embroidery or wholesale DTF.