Discover high-performance wear designed for young athletes with the A4 Apparel NB3142 - Youth Cooling Polyester Performance T-Shirt, designed with UPF 44+ for superior sun protection. This year-round staple boasts a plethora of features aimed at enhancing performance during intense activities, including our exceptional A4's 5-Star Fabric and superior moisture-wicking technology. The ultra-tight knit ensures optimal opacity and printability, while its stain-release and odor-resistant characteristics guarantee easy care and long-lasting freshness. For lasting durability, the tee also features fade and snag resistance, reinforced shoulder seams, and a double needle cover stitch hem.
Details:
Product Type: Performance T-Shirts
Brand: A4 Apparel
Style: Youth, Athletic
Key Features:
A4's 5-Star Fabric: 4 oz. Micro Poly Interlock for lightweight comfort
Superior Moisture-Wicking: Keeps you dry during intense activities
Ultra-Tight Knit: Ensures better opacity and ideal printability
Stain Release & Odor Resistant: Easy care and lasting freshness
Fade & Snag Resistant: Built for long-lasting durability
44+ UPF Sun Protection: Protects from harmful UV rays
Reinforced Shoulder Seams: Adds strength and durability
Double Needle Cover Stitch Hem: Provides a clean and durable finish
Tag-Free Neck: For added comfort
Decoration Methods:
Direct to Film (DTF): Ideal for full-color designs with crisp detail on polyester fabrics
Screen Printing: Offers durable and bold designs, ideal for performance wear
Heat Transfer Vinyl (HTV): Perfect for adding personalized names or numbers with a sharp, professional finish
Sublimation: Perfect for vibrant, full-color designs on white polyester fabrics
This versatile performance tee is also available in men's and women's versions. Explore the benefits of the A4 N3142 for adults and the A4 NW3201 specifically designed for women. Stay cool, clean, and protected with A4 Apparel's high-quality athletic wear.
Select Placement and Click Image to Reposition/Resize
Front Center
Left Chest
Image size
Width
Height
The maximum size for artwork is
9" x 9"
based on the proportion of your graphic.
Our artists digitize and size your design to the best fit.
Your Creation
Remove Background
Our expert artists will automatically adjust your design for every size — ensuring it looks balanced, centered, and perfectly proportionate across all garments. Each piece is reviewed with care so your design always looks its best.
Price
POD total
$5.99
Under 100
$9.99
100-199
$12.99
200-299
$13.99
300-399
$14.99
400-499
$15.99
500-599
$16.99
600-699
$17.99
700-799
$18.99
800-899
$19.99
900-999
$29.99
1000+
Apply Expert Sizing
$9.99
4.44
4.44
We're making your design Print Perfect popop
Removing background
Cropping unwanted areas
It looks like the image you uploaded has been enlarged significantly. To ensure the best print quality, please upload an image that has not been resized beyond 1.5 times its original dimensions. Enlarging images can cause pixelation and blurriness, resulting in poor print quality. Please upload a higher resolution image or reduce the size to maintain quality.
Potential Image Quality Issue Detected
Notes for our designers (optional)
We auto-trim unnecessary space from your artwork
When converting from RGB to CMYK for printing, especially in DTF (Direct to Film) printing, slight shifts in color can occur. This is because the RGB color gamut (the range of colors) is broader than CMYK, meaning certain vibrant RGB colors may not have an exact match in CMYK, leading to a duller or different color appearance in print. Colors may vary slightly when converting from RGB (screen) to CMYK (print)
We've removed the background and optimized your design size to help reduce any potential issues. If you notice anything that needs adjustment, feel free to leave a comment at checkout.
Please ensure your design is high-quality. We are not responsible for blurry, pixelated, or low-resolution images. Verify carefully before submitting.What you Upload and see here is EXACTLY what we'll print.
Designs containing shadows, fades, or translucent areas may not meet production standards and could result in delayed or rejected orders.Drop Shadow or Shadow Effect Detected
Select Placement and Click Image to Reposition/Resize
Back
Image size
Width
Height
The maximum size for artwork is
9" x 9"
based on the proportion of your graphic.
Our artists digitize and size your design to the best fit.
Your Creation
Remove Background
Our expert artists will automatically adjust your design for every size — ensuring it looks balanced, centered, and perfectly proportionate across all garments. Each piece is reviewed with care so your design always looks its best.
Price
POD total
$5.99
Under 100
$9.99
100-199
$12.99
200-299
$13.99
300-399
$14.99
400-499
$15.99
500-599
$16.99
600-699
$17.99
700-799
$18.99
800-899
$19.99
900-999
$29.99
1000+
Apply Expert Sizing
$9.99
4.44
4.44
We're making your design Print Perfect popop
Removing background
Cropping unwanted areas
It looks like the image you uploaded has been enlarged significantly. To ensure the best print quality, please upload an image that has not been resized beyond 1.5 times its original dimensions. Enlarging images can cause pixelation and blurriness, resulting in poor print quality. Please upload a higher resolution image or reduce the size to maintain quality.
Potential Image Quality Issue Detected
Notes for our designers (optional)
We auto-trim unnecessary space from your artwork
When converting from RGB to CMYK for printing, especially in DTF (Direct to Film) printing, slight shifts in color can occur. This is because the RGB color gamut (the range of colors) is broader than CMYK, meaning certain vibrant RGB colors may not have an exact match in CMYK, leading to a duller or different color appearance in print. Colors may vary slightly when converting from RGB (screen) to CMYK (print)
We've removed the background and optimized your design size to help reduce any potential issues. If you notice anything that needs adjustment, feel free to leave a comment at checkout.
Please ensure your design is high-quality. We are not responsible for blurry, pixelated, or low-resolution images. Verify carefully before submitting.What you Upload and see here is EXACTLY what we'll print.
Designs containing shadows, fades, or translucent areas may not meet production standards and could result in delayed or rejected orders.Drop Shadow or Shadow Effect Detected
It looks like the image you uploaded has been enlarged significantly. To ensure the best print quality, please upload an image that has not been resized beyond 1.5 times its original dimensions. Enlarging images can cause pixelation and blurriness, resulting in poor print quality. Please upload a higher resolution image or reduce the size to maintain quality. Potential Image Quality Issue Detected
Discover high-performance wear designed for young athletes with the A4 Apparel NB3142 - Youth Cooling Polyester Performance T-Shirt, designed with UPF 44+ for superior sun protection. This year-round staple boasts a plethora of features aimed at enhancing performance during intense activities, including our exceptional A4's 5-Star Fabric and superior moisture-wicking technology. The ultra-tight knit ensures optimal opacity and printability, while its stain-release and odor-resistant characteristics guarantee easy care and long-lasting freshness. For lasting durability, the tee also features fade and snag resistance, reinforced shoulder seams, and a double needle cover stitch hem.
Details:
Product Type: Performance T-Shirts
Brand: A4 Apparel
Style: Youth, Athletic
Key Features:
A4's 5-Star Fabric: 4 oz. Micro Poly Interlock for lightweight comfort
Superior Moisture-Wicking: Keeps you dry during intense activities
Ultra-Tight Knit: Ensures better opacity and ideal printability
Stain Release & Odor Resistant: Easy care and lasting freshness
Fade & Snag Resistant: Built for long-lasting durability
44+ UPF Sun Protection: Protects from harmful UV rays
Reinforced Shoulder Seams: Adds strength and durability
Double Needle Cover Stitch Hem: Provides a clean and durable finish
Tag-Free Neck: For added comfort
Decoration Methods:
Direct to Film (DTF): Ideal for full-color designs with crisp detail on polyester fabrics
Screen Printing: Offers durable and bold designs, ideal for performance wear
Heat Transfer Vinyl (HTV): Perfect for adding personalized names or numbers with a sharp, professional finish
Sublimation: Perfect for vibrant, full-color designs on white polyester fabrics
This versatile performance tee is also available in men's and women's versions. Explore the benefits of the A4 N3142 for adults and the A4 NW3201 specifically designed for women. Stay cool, clean, and protected with A4 Apparel's high-quality athletic wear.
We ordered these shirts for a few new Soccer Club players to wear in the interim while we wait for their official uniforms to arrive and theyve been perfect. The quality is excellent, the shirts are comfortable and durable, and shipping was impressively fast. We also purchased DTF transfers of our club logo to apply, and they adhered beautifully. The final result looks sharp and professional youd never guess these werent part of the original kit. Highly recommend!
Review detail
Review loading
FitAs expected
ShrinkageAs expected
CustomizationOther/Vinyl/Other
Primary usageOther/Other
Product softness
Very soft
Average
Rough
Material Quality
Excellent
As expected
Poor
Product Durability
Excellent
As expected
Poor
Value for money
Great
Fine
Poor
Did you find this helpful?
5
Reviewed by: Sean/ Tara Goldsworthy on 06/16/2025
This A4 performance product compared to the old version is a massive upgrade. The material is softer, more vibrant, and works extremely well with sublimination. With the old A4 product we would have 5% of the products be defective and need replacement. This product we have not had a single one on over 110+ orders. Highly recommended.
Review detail
Review loading
FitAs expected
ShrinkageLess
CustomizationDirect to Film (DTF)
Product softness
Very soft
Average
Rough
Material Quality
Excellent
As expected
Poor
Product Durability
Excellent
As expected
Poor
Value for money
Great
Fine
Poor
Did you find this helpful?
5
Reviewed by: Lisa Lee on 07/11/2025
Was looking for the sky blue color shirts and they are exactly was I expected. Good color and used for basseball practice jerseys so nice that is has UPF 44 as listed. Would definitely order again.
You can now customize apparel directly on AllDayShirts product pages. Select your product, choose Print or Embroidery, upload your design, and we’ll ship your items fully decorated by our professional team — no equipment needed.
Start on any product page.
Click Start Creating — or scroll down and select Yes, Decorate.
Choose your decoration method: Print or Embroidery.
Upload your artwork
Select your size and placement (or use Expert Sizing for best results).
Enter your quantity.
Click Add to Cart.
Done.
Print vs Embroidery — what’s the difference?
Print (DTF)
âś” Unlimited colors
âś” Great for photos & detailed designs
âś” Bold, vibrant graphics
Embroidery
âś” Raised stitched look
âś” Best for simple logos/text
âś” More professional & upscale feel
Quick tip:
Colorful or detailed = Print
Clean logo or branding = Embroidery
What is Expert Sizing?
We automatically size your design based on the garment and placement so it looks balanced and professional. Perfect if you’re unsure what size to choose.
Why do printed colors look different than my screen?
Screens use RGB. Printing uses CMYK. Some colors may appear slightly different in real life — this is normal in professional printing.
What files work best?
PNG (transparent), AI, PDF, or high-res JPG.
Cleaner files = better results.
Can I embroider detailed artwork?
Embroidery works best with simple designs. Small text or complex graphics may need to be simplified — otherwise we’ll recommend Print.
Shoulder Measured straight across from one shoulder seam to the opposite shoulder seam.
Chest Measured straight across from one underarm seam to the other (pit-to-pit).
Body Length Measured vertically from the top center to the bottom edge on the back side, as the back is slightly longer.
Sleeve Length Measured from the top edge of the sleeve straight down to the bottom edge.
Product Details
Bulk Ordering
Placement type
Bulk Ordering
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