- Athletic fit
- Super-soft fabric
- Powered by 37.5® technology, which helps warm you up when you’re cold and cool you down when you’re hot
- 34% 37.5® post-consumer recycled Polyester, 52% post-consumer recycled Polyester, 7% Wool, 7% Elastane
- Reflective "4" logo on back
The all-new Level Tank features the same revolutionary 37.5® technology as our Level Tees to create the ultimate athletic wear. Active particles embedded in the fabric vent heat in warm conditions and trap heat when it’s cold—technology that’s proven to increase your body’s efficiency by up to 26% at lactate threshold. Super soft fabric and flatlock stitching make it so comfortable that Runner’s World chose it as the most comfortable running tank of 2020.