Most listings use polyester or polyester blends with spandex. Examples in the category include 100% polyester and blends such as 93% polyester/7% spandex and 85% polyester/15% spandex.
Many options list UPF 50+ sun protection (noting descriptions that UPF 50+ protects against 98% of harmful UV rays). However, at least one design in the category specifies no UPF rating.
Common closures include elastic waistbands and pull-on styles. Many pieces also feature adjustable drawstrings or functional ties for a more secure fit.
Many swims include an inner mesh liner or a built-in mesh brief for support and breathability. A few listings note unlined options as well.
Yes. You can find two-piece sets that pair a rashguard with swim shorts, as well as one-piece unisuit/rashguard styles in toddler sizes.
Some trunks highlight movement-friendly details—examples include a dolphin hem and stretchy or 4-way stretch fabrics, which are described as allowing better mobility for active play.