All our Splashy range is constructed using our own e-FLEX material which is a combination of stretchy Nylon, soft comfy plush inner and a waterproof sandwich filling of recycled plastic. For the Splashy wetsuit we use stretchy and close fitting Lycra for the collar for added comfort and fit. There’s is a zip and Velcro arrangement closing the back and the inside is a lovely soft plush for added comfort.