Propel Neoprene Swim Cap Size:L/XL or (2) use the silicone

or (2) use the silicone sleeve and mount with zip ties

Shatter-Proof Lens The PC lenses are shatter-resistant for improved safety and durability

The wide surface of the silica rod molecules enhances its natural water affinity

Articulated elbows

Mounting screws included

Propel Neoprene Swim Cap Size:L/XL or (2) use the siliconeDesigned with an adjustable velcro strap for a snug comfortable fit, the Propel Neoprene Swim Cap will stop "brain freeze" in cold water while maintaining optimal hydrodynamics through the water. Features STAY WARM Premium 3mm laminated nylon neoprene is finished with an adjustable velcro chin strap to ensure a snug fit to stop "brain freeze" in cold water. REDUCED WATER RESISTANCE Super Composite Skin (SCS) hydrodynamic coating reduces surface drag