Rip Curl's Rubber Soul Plus 3mm Split Toe Bootie is debatably one of the best defences against the cold. The internal is fully lined with Flash lining also known as the driest and warmest lining in the Rip Curl Range. Rip Curl uses Liquid Coating Neo which makes the booties 100% waterproof. When surfing in winter, particularly down south, booties are a necessity to keep you warm and toasty.