XCEL X-Flex X-Zip 4/3mm Full Length Wetsuit 2011: Love surfing so much that you’ll bear the coldest waters for the best swells? The XCEL X-Zip Full Length Wetsuit it designed for people like you. The Thermobamboo inner chest material keeps you well insulated, while the X-Zip system keeps the water out and heat in, making the XCEL X-Flex X-Zip 4/3mm Full Length Wetsuit your best friend in the water..