too long, then it will distract you when swimming.
there is some swim-wear that comes with an elastic band around the waist. the role of the elastic band is to keep the swim-wear in place. however, this is not a good idea if you have sensitive skin.
the elastic band might end up hurting your skin especially if it is very tight. always determine whether you want a swim-wear with a fastener or one with an elastic band.
the good lining is important when looking for swim-wear. the work of the lining is to protect your skin when swimming and also when strolling on the beach. swim-wear should be made with an absorbent 