Neoprene is a non-petroleum-based, synthetic material infused with nitrogen bubbles for insulation and buoyancy. Ronstans neoprene laminate sailing wetsuits use a combination of high-performance, varying-thickness materials (including neoprene) for water repellence, wind-proofing, drying speed, and thermal qualities, suitable for any weather conditions. The linings are used in strategically placed panels to highlight their individual properties. With a combination of high-stretch fabrics to increase comfort and flexibility, and lightweight but extremely durable and warm materials, Ronstans Dinghy wetsuits are key for the racing sailor. The 2.5mm/2mm-thick pants have a high waist for lower back coverage and overlap with the top, with a wide waist belt for comfort and secure fit. With a padded knee insert and super-stretch Neospan calves and side panels to provide continual comfort and compression during muscle expansion, these pants give you the support you need for high activity. Imported.