Sport-Tek ST351 Colorblock PosiCharge Competitor Tee

Features

3.8-ounce 100% polyester interlock that stays light and breathable through activity

PosiCharge technology that locks in color so the tee resists fading wash after wash

Colorblock design that gives it a distinctive, sporty two-tone look

Raglan sleeves that give the shoulders a natural range of motion and define the colorblock style

Smooth interlock knit that sits comfortably against the skin

Removable tag for comfort and for relabeling with your own brand

Machine washable for simple, everyday care

Screen prints and heat transfers well for team, gym, and athletic programs

Sizes	24-47	48-71	72-143	144-239	240-359	360+	Quantity
XS	$8.38	$7.55	$7.24	$6.94	$6.76	$6.45	SOLD Get restock alert
S	$8.38	$7.55	$7.24	$6.94	$6.76	$6.45	SOLD Get restock alert
M C	$8.38	$7.55	$7.24	$6.94	$6.76	$6.45	- +
L C	$8.38	$7.55	$7.24	$6.94	$6.76	$6.45	- +
XL C	$8.38	$7.55	$7.24	$6.94	$6.76	$6.45	- +
2XL	$9.46	$8.62	$8.29	$7.98	$7.78	$7.45	SOLD Get restock alert
3XL C	$9.46	$8.62	$8.29	$7.98	$7.78	$7.45	- +
4XL C	$9.46	$8.62	$8.29	$7.98	$7.78	$7.45	- +

Description

The Sport-Tek ST351 Colorblock PosiCharge Competitor Tee is a lightweight, performance tee that pairs a sporty two-tone look with active comfort and clean, professional branding. It is made from a 3.8-ounce 100% polyester interlock with PosiCharge technology, which locks in color so the tee keeps its look wash after wash and resists the fading that can dull team colors over a season. The colorblock design gives it a distinctive athletic style, which makes the ST351 a strong choice for teams, gyms, athletic programs, and everyday active wear.

The construction is built for movement, comfort, and quality decoration. Raglan sleeves give the shoulders a natural range of motion for throwing, lifting, and running, and they define the colorblock look at the same time. The light interlock knit stays breathable and sits smoothly against the skin through activity, and a removable tag lets you relabel the tee for your own brand while keeping the interior comfortable. The smooth body panel takes screen printing and heat transfer cleanly, ready for your logo.

Care Instructions

Machine wash cold on a gentle cycle with like colors.
Do not bleach or use fabric softener, since this protects the fabric and the PosiCharge finish.
Tumble dry low.
Do not iron directly over any decoration.
Store folded in a cool, dry place.

Available Colors

Royal/ White, Black/ Lime Shock, Iron Grey/ White, Black/ White, Black/ True Red, Tropic Blue/ Lime Shock, True Royal/ White, True Red/ White, True Navy/ White, True Navy/ Gold, and more.

Available Sizes

XS, S, M, L, XL, 2XL, 3XL, 4XL

Customization Options

Embroidery
Screen Printing
Direct-to-film

Size Chart

	XS	S	M	L	XL	2XL	3XL	4XL
Chest	32-34	35-37	38-40	41-43	44-46	47-49	50-52	53-55

Brand Intro

Known for its athletic polos, moisture-wicking tees, hoodies, and lightweight jackets, the brand focuses on functional fabrics that stay comfortable under pressure. It’s widely trusted by teams, schools, and businesses that need consistent quality for uniforms and branded apparel. In the wholesale space, Sport-Tek has become a benchmark for dependable, performance-driven activewear that works in both sport and everyday use.

To learn more, visit our Sport-tek brand page

Shipping and Return

Free shipping on orders over $250 anywhere in the US. A $10 flat fee applies on orders under $250.
Orders placed before 3 p.m. CST are processed and shipped the same day. Delays may occur during sales or peak shopping periods.
Shipping options include Ground, Express, and ASAP depending on how fast you need delivery.
Delivery times range from 2–5 business days for Ground, 2–3 days for Express, and next business day for ASAP (based on cut-off times).
Returns are accepted within 30 days with approved RA. Items must be unused and in original condition. Restocking fees may apply in some cases.