All ION rashguards are made of highly elastic SpanFlex_UV jersey.
The hand feel of this supreme material makes the difference! They can be used to protect you from the windchill effect, UV radiation and abrasion but also work as a thin extra layer underneath the wetsuit.
Flat_Lock: flexible, non irritating seams
Slip_Loop: a fine webbing loop for fixing the boardshorts
UV_Protection: UPF rating 35 to 50+ (depending on jersey color)
MATERIALS: SpanFlex_UV: super elastic armpit area for perfect movement