The most frequent negative comment zone3 hear about neoprene caps in general relate to the strap under the chin they have done what they can to combat this on their standard cap by adding the velcro strap giving the user a degree of adjustability however zone3 wanted to take this to the next level and produce a cap with no strap at all introducing the zone3 neoprene strapless swim cap carefully designed to ensure that it does not slip off the head too easily