OptiO2 Labs™
Unisex (NO)SE Breather T-Shirt Unisex (NO)SE Breather T-Shirt
OptiO2 Labs™ Unisex (NO)SE Breather T-Shirt $25.00
If you know you know. The mark of an elite athlete is in the details. Let the world know you're top tier. Nasal breathing = Increased natural production of nitric oxide (NO) It feels soft and lightweight, with the right amount of stretch. It's comfortable and flattering for both men and women. • 100% combed and ring-spun cotton (Heather colors contain polyester) • Ash color is 99% combed and ring-spun cotton, 1% polyester • Heather colors are 52% combed and ring-spun cotton, 48% polyester • Athletic and Black Heather are 90% combed and ring-spun cotton, 10% polyester • Heather Prism colors are 99% combed and ring-spun cotton, 1% polyester • Fabric weight: 4.2 oz (142 g/m2) • Pre-shrunk fabric • Shoulder-to-shoulder taping • Side-seamedSize guide   XS S M L XL Length (inches) 27 28 29 30 31 Width (inches) 16 ½ 18 20 22 24
Women's (NO)SE Breather Tank
OptiO2 Labs™ Women's (NO)SE Breather Tank $25.00
If you know you know. The mark of an elite athlete is in the details. Let the world know you're top tier. Nasal breathing = Increased natural production of nitric oxide (NO) • 50% polyester/25% combed ring-spun cotton/25% rayon • Fabric weight: 4.2 oz (142 g/m2) • Raw edge seams • Fabric is laundered to reduce shrinkageSize guide   XS S M L XL Length (inches) 25 ⅞ 26 ½ 27 ⅛ 27 ¾ 28 ⅜ Width (inches) 15 16 17 18 19 ½

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Patented nasal breathing trainer.

One of a kind. No knock offs.