Under Armour Boys' HeatGear Armour Long Sleeve Black YXL
Our UA Hg Armour Ls is the perfect performance baselayer for athletes. It is crafted with HeatGear fabric that provides superior sweat-wicking and quick-drying capabilities, while UPF 30 protection shields the skin from the sun. The 4-way stretch construction and mesh underarm panels offer strategic ventilation and maximum mobility. Stay cool and comfortable all day in our UA Hg Armour Ls.
Our UA Hg Armour Ls is the perfect performance baselayer for athletes. It is crafted with HeatGear fabric that provides superior sweat-wicking and quick-drying capabilities, while UPF 30 protection shields the skin from the sun. The 4-way stretch construction and mesh underarm panels offer strategic ventilation and maximum mobility. Stay cool and comfortable all day in our UA Hg Armour Ls.
Our UA Hg Armour Ls is the perfect performance baselayer for athletes. It is crafted with HeatGear fabric that provides superior sweat-wicking and quick-drying capabilities, while UPF 30 protection shields the skin from the sun. The 4-way stretch construction and mesh underarm panels offer strategic ventilation and maximum mobility. Stay cool and comfortable all day in our UA Hg Armour Ls.
Our UA Hg Armour Ls is the perfect performance baselayer for athletes. It is crafted with HeatGear fabric that provides superior sweat-wicking and quick-drying capabilities, while UPF 30 protection shields the skin from the sun. The 4-way stretch construction and mesh underarm panels offer strategic ventilation and maximum mobility. Stay cool and comfortable all day in our UA Hg Armour Ls.
in 4 offers
The lowest price for Under Armour Boys' HeatGear Armour Long Sleeve Black YXL right now is $37.99 at Techinn.com, compared across 4 retailers.
The all-time low was $20.99 on 14 Nov 2025 — today's price is 81% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 11 May 2026.
Last updated at 11/05/2026 07:52:30
Under Armour Heatgear Armour Long Sleeve Base Layer Black 18-20 Years Boy
Delivery $19.99
Under Armour Boys HeatGear Tee Black/White XL XL
Delivery between 14–19 May $10.99
Under Armour HeatGear Armour Boys' Long Sleeve Black YXL
Delivery $9.99
Under Armour Boys' Heatgear Long-sleeve T-shirt, Black, Yxl
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
originally posted on dickssportinggoods.com
This is doing a good job as a base layer for those fall FB and Soccer games. Fits well, performs well.
originally posted on dickssportinggoods.com
I bought this for my daughter for a fall softball game. She has a women's XS small also. This was a little thinner than I wanted and the sleeves were longer than the women's.
originally posted on dickssportinggoods.com
My son is 57” tall and weighs 86 pounds. He typically wears a YL. I’d still get him the YL, but it does run a bit smaller than expected, even for UA heatgear (which is supposed to be fitted). The arms are normal length, however. He loves it!
| Care Instructions | Machine Wash |
| Closure Type | Pull On |
| Neck Style | Round Neck |
Under Armour Heatgear Armour Long Sleeve Base Layer Black 18-20 Years Boy
Delivery $19.99
Under Armour Boys HeatGear Tee Black/White XL XL
Delivery between 14–19 May $10.99
Under Armour HeatGear Armour Boys' Long Sleeve Black YXL
Delivery $9.99
Under Armour Boys' Heatgear Long-sleeve T-shirt, Black, Yxl
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
This is doing a good job as a base layer for those fall FB and Soccer games. Fits well, performs well.
I bought this for my daughter for a fall softball game. She has a women's XS small also. This was a little thinner than I wanted and the sleeves were longer than the women's.
My son is 57” tall and weighs 86 pounds. He typically wears a YL. I’d still get him the YL, but it does run a bit smaller than expected, even for UA heatgear (which is supposed to be fitted). The arms are normal length, however. He loves it!
I bought this for my son who plays baseball and he loves it. The sleeves are a little long but I just fold them.
Great long sleeve comfortable top. I love three tops but they never make it in women’s adult. So I’ve resorted to buying a kids large and it fits great
Love this top, great quality.Sports direct have the sizing incorrect on these products. I bought this top for my 9 year old. It fits my 13 year old.
Both of my children dislike the inner threading of the seams. Says it's scratchy, makes them itch, and is uncomfortable. I pulled the sleeves up on my arms to feel what they're feeling, and I have to agree. It has the nylon/fishing line type feel to it
I bought this during the winter and it was amazing during games. It kept me warm and it felt super comfortable
I bought this item for my 10 year old son who wears it as a baselayer when he plays baseball and golf. It keeps him warmer than when he's not wearing it but I don't think it's as warm as to be called 'heatgear', certainly not warm enough for chilly winter days in Melbourne.
Excellent quality and worth the money, price point could be lower but the quality is there.
| Care Instructions | Machine Wash |
| Closure Type | Pull On |
| Neck Style | Round Neck |
