Review on 🧢 Enhance Visibility and Warmth with the TYR Hi-Vis Warmwear Cap by Chris Bertoli

Fabric inside, some rubberized material outside. It's very thin and not bulky at all, more like a lycra hat but water doesn't penetrate. While the strap is perfect for my 57cm head, the cap is a bit too big leaving me with some loose material on my head that puckers annoyingly at high speeds. It is more comfortable than a silicone cap and more durable than a lycra cap. I use it for swimming in the open sea in tropical water (22 degrees C). The highly visible color is very bright and excellent. It never overheated me, but there is some warmth from the water underneath, like warm water in your wetsuit but with no insulation.