The AS Colour Lion Bear Front Lg Back Small Tank top is the tank for you. It features low and raw (unsewn) armholes that are perfect for the gym. It is a regular fit sleeveless tank tee made from 100% combed cotton. 
*AS Colour is an Ethical Fashion brand.

.: 100% combed ringspun cotton (fiber content may vary for different colors)
.: Light fabric (4.4 oz/yd² (149 g/m²))
.: Regular fit
.: Raw armhole edges