Wetsuits & drysuits
Staying warm when the water is 4°C.
Neoprene lies about the cold
A wetsuit keeps you warm by trapping a thin layer of water against your skin — which is great until the canyon runs out of sun and the pools hit 4°C. A drysuit is the honest answer.
The numbers
wetsuit 4/3mm for dry, 5/4 for wet drysuit for 4°C and long swims gloves neoprene, always boots sticky, ankle support
How we beta it
Wet routes list the water temp and the recommended suit, so you don't learn the difference by shivering.