Jerzees 21ML - Unisex DRI-POWER® SPORT Long-Sleeve T-Shirt - Athletic Heather
Selected Color: Athletic Heather9 colors
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Description
The Jerzees 21ML Dri-Power Sport Long-Sleeve T-Shirt is the long-sleeve version of the 5.3 oz 100% polyester 21M performance blank, built for sublimation programs, cold-weather team athletic uniforms, and any decorated application where moisture management runs alongside long-sleeve coverage. The 100% polyester jersey carries Jerzees' Dri-Power moisture-wicking across the full fabric, pulling sweat off the skin during activity and pushing it to the surface to evaporate, which keeps the wearer drier through practice and outdoor events than a cotton or cotton-blend substrate would. Antimicrobial treatment is built into the fibre to limit odor-causing bacteria between wash cycles, a real factor on team garments worn across multiple sessions before laundering. The long-sleeve cut adds forearm and cuff print real estate the short-sleeve 21M does not have, opening sleeve-stripe, forearm sponsor, and wraparound graphic placements common on athletic and event programs. Construction matches the performance spec: seamless body, seamed 1x1 rib collar with double-needle coverstitching on the front neck, quarter-turned to eliminate the center crease, shoulder-to-shoulder taping, rib cuffs with concealed seams, and a tearaway label for custom neck-label programs. Available in 9 colours including White, Black, J Navy, Royal, and High Viz Safety colours, in S through 3XL.
Because the Jerzees 21ML is 100% polyester, it opens the full sublimation method across every colour in the range, not just white. Disperse dyes bond into polyester fibres on a molecular level, so sublimation on the 21ML produces all-over vivid full-colour prints with no hand feel, no cracking, and no added weight on the garment face, and the long-sleeve panel lets the graphic run down the sleeve and onto the cuff in a single dye pass. This makes it the correct substrate for spirit-wear programs, cross-country and outdoor-event shirts, and sublimated team uniforms where the art extends past the standard chest print area. DTF transfer is the most practical route for programs printing the same art across multiple colourways without sublimation setup: the transfer bonds to the 100% polyester face without migration risk from dye in the fabric, and the tearaway label supports a concurrent custom neck-label press. For screen printing with plastisol, the 100% polyester composition carries the highest dye migration risk in the performance tee category. Low-bleed, low-migration plastisol ink is mandatory on any colour other than white, cure temperature must sit at the absolute lowest effective range for the ink system, and a poly-blocking underbase is required under any light or bright ink on coloured grounds. Sleeve printing on a long-sleeve blank needs a sleeve platen, so confirm your platen setup before quoting forearm placements. DTG is limited because the 100% polyester body provides minimal fibre for pretreat adhesion and produces muted results against a cotton-content substrate. Vinyl and HTV press at low temperature, since polyester scorches quickly, so monitor the press closely on the first application. Water-based and discharge inks are not viable on this blank.
- Brand: Jerzees
- Style: 21ML (Dri-Power Sport Long-Sleeve T-Shirt)
- Fabric: 100% polyester jersey
- Weight: 5.3 oz/yd2
- Technology: Dri-Power moisture-wicking, antimicrobial odor control
- Construction: Seamless body, seamed 1x1 rib collar, double-needle coverstitching on front neck, quarter-turned body, shoulder-to-shoulder taping, rib cuffs with concealed seams, double-needle bottom hem, tearaway label for custom re-labeling
- Fit: Unisex, long sleeve
- Sizes: S, M, L, XL, 2XL, 3XL
- Colors available: 9 colours including White, Black, J Navy, Royal, True Red, Silver, Athletic Heather, High Viz Safety Green, High Viz Safety Orange
- Case pack: 6 dozen (72 units) per case on most sizes; 3 dozen (36 units) per case on 3XL. Confirm current units per case for your colour and size before a large team or event run.
- Ordering: available by the piece or per case
- Care: Machine wash warm inside out. Only non-chlorine bleach if needed. Tumble dry low. Do not iron. Do not dry clean.
For team and event programs on the Jerzees 21ML: route all-over and sleeve graphic work to sublimation, which is the primary decoration method for this blank across all 9 colours. DTF is the correct route for multi-colour programs without sublimation equipment, particularly on High Viz Safety Green and Safety Orange where dye migration risk under plastisol is highest. If screen printing with plastisol, specify low-bleed ink in writing with your ink supplier and set your dryer at the lowest effective cure temperature before the full run. TheClothingSpace stocks the Jerzees 21ML at wholesale pricing with bulk discounts that increase with case and unit quantity, among the lowest prices online for this style, with fast US shipping on stocked colours. Comparing performance blank options across brands? Browse all wholesale blank long-sleeve t-shirts.
Features
- 100% preshrunk cotton
- Made with sustainably and fairly grown USA cotton
- Seamless rib at neck
- Taped shoulder-to-shoulder
- Double-needle stitching throughout
- Tear-away label
- Quarter-turned to eliminate center crease
- 7/8" collar
- Classic fit
Shipping & Returns
All Blank orders of $59 or more are shipped FREE same day via UPS Ground. Blank orders under $59 will qualify for the following shipping options:
- USPS Blank Apparel Shipping (2-4 Business Days): $4.99
- UPS Ground (1-2 Business Days): $8.99
Read our Shipping Policy for more information.
Fill out the Blank Apparel Return Form within 30 days of the order date to be eligible for a refund or return.
Note: All blank orders shipped outside of the continental US are not eligible for return, exchange, or refund.

Decoration Method Compatibility
How this blank performs across popular decoration methods.
| Method | Compatible | Notes |
|---|---|---|
| Sublimation | ✓ | fully viable across all 9 colours; 100% polyester allows disperse dyes to bond into the fibres on any ground colour for vivid all-over full-colour prints with no hand feel or cracking; the long-sleeve panel lets the graphic run down the sleeve and onto the cuff in a single dye pass; the correct primary method for team uniforms and event shirts on this blank |
| DTF Transfer | ✓ | most practical route for multi-colour programs without sublimation setup; bonds to the 100% polyester face without migration risk; tearaway label supports concurrent custom neck-label programs on the same press pass; a sleeve platen is needed for forearm placements |
| Screen Print (Plastisol) | ✓ | 100% polyester carries the highest dye migration risk in the performance tee category; low-bleed low-migration ink is mandatory on any colour other than white; cure at the absolute lowest effective temperature; poly-blocking underbase required under light or bright inks on coloured grounds; sleeve prints require a sleeve platen |
| Vinyl / HTV | ✓ | press at low temperature; polyester scorches quickly so monitor heat closely on the first application and reduce temperature below standard cotton settings; suitable for names, numbers, and small sleeve or forearm applications |
| DTG | ✗ | 100% polyester provides minimal fibre for pretreat adhesion; results are muted compared to cotton-content substrates; not the recommended route on this blank; route full-colour all-over work to sublimation instead |
| Screen Print (Water-based / Discharge) | ✗ | polyester will not discharge; water-based inks do not bond reliably to the polyester face; not a viable method on the Jerzees 21ML |
| Embroidery | ✗ | lightweight 5.3 oz polyester jersey is too thin and stretchy for standard embroidery without significant cut-away stabilisation; not the recommended application for this performance blank |
How Does the Jerzees 21ML Compare to Other Performance Long-Sleeve Tees?
| Spec | Jerzees 21ML | Jerzees 21M | Sport-Tek ST350LS |
|---|---|---|---|
| Starting At | $6.49 | $4.37 | $9.18 |
| Weight | 5.3 oz | 5.3 oz | 3.8 oz |
| Yarn / Fabric | 100% polyester | 100% polyester | 100% polyester |
| Fit | Unisex, crew neck, long sleeve with rib cuffs | Unisex, crew neck, short sleeve | Unisex, crew neck, long sleeve |
| Construction | Dri-Power wicking, antimicrobial odor control, tearaway label, seamless body, rib cuffs | Dri-Power wicking, antimicrobial odor control, tearaway label, seamless body | Lightweight PosiCharge moisture-wicking with snag resistance |
| Best For | Sublimation across all colours, cold-weather team athletic programs, sleeve and forearm graphic placements | Short-sleeve sublimation and athletic programs, lowest-cost performance blank in the same line | Lighter-weight long-sleeve sublimation and athletic programs where a thinner hand is preferred |
Fabric Blend by Color Group
Not all colorways share the same fabric composition. Check the blend before ordering for decoration jobs where substrate matters.
| Color Group | Blend | Print Consideration |
|---|---|---|
| White | 100% polyester | Optimal sublimation ground; disperse dyes produce the most vivid colour results on white; DTF and plastisol also produce clean results here with minimal migration risk |
| Light grounds (Silver, Athletic Heather) | 100% polyester | Sublimation viable on all; for plastisol screen printing use low-bleed ink and the lowest effective cure temperature to control dye migration from the ground colour |
| Dark grounds (Black, J Navy, Royal, True Red) | 100% polyester | Sublimation fully viable; plastisol requires a mandatory poly-blocking underbase and low-bleed ink; DTF is the lower-risk alternative for dark-ground colour programs |
| Safety colours (High Viz Safety Green, High Viz Safety Orange) | 100% polyester with fluorescent dye | Sublimation viable; fluorescent ground dye carries the highest migration risk under heat; mandatory poly-blocking underbase for plastisol and the lowest possible cure temperature; DTF is the recommended route on safety colours |


