Oceanlily Maternity Over The Belly Bikini Swim Bottom BSW01 bottom only, tankini tops are sold separately comes with versatile 3 in 1 waist for your comfort: over belly, mid belly and underbelly. Good for pre, post and all stages of pregnancy order pre-pregnancy size or 36"-38"=size XS, 38"-40"=size S, 40"-42"=size M, 42"-44"=size L, 44"- 46"=XL, 46"-48"=XXL see pictures for suggested Oceanlily tankini tops that can be mixed and matched standard Chlorine resistant, 87% Nylon Supplex, 13% Spandex