I bought this to give room for an expanding tummy - i'm 6 months pregnant and this completely conceals the bulge.  i suspect i will appreciate that in the spring when i'm actually trying to hide my leftover belly... it's incredibly soft and the top is wide enough to cover a bra strap.  the arm holes are small enough to cover my parts but large enough to be comfy.  i'm 5'5", medium build and normally wear a medium but got a large given my circumstances.  a medium would have probably worked normal