Manera Men's ALT Meteor Steamer 4/3mm Chest Zip Fullsuit Wetsuit ALT stands for « Alternative ». We have built a greener alternative to conventional wetsuits, with performance in mind. It features a 100% natural YULEX rubber . Unlike finite resources like oil and limestone, natural rubber is a renewable resource. Directly tapped from FSC-certified hevea forests without cutting them down, it ensures a long-term supply stability as well as a drastically reduced environmental impact. Both inside and outside jerseys as well as our inside fleece are recycled, and the wetsuit features all our other standard sustainable processes. The performances of the ALT are close to a MAGMA’s. W e believe the ALT represents a new generation of high-performance wetsuits that has a more reasonable impact on the planet. - A GOOD FIT MEANS EVERYTHING - Warmth : No water entry, no air pocket. Durability : The neoprene is only stretched when moving. Comfort : No over tight areas, comfortable armpits/crotch. Style : Folds will never be fashionable. Front Zip - Fast & easy frontzip entry for a maximum comfort while riding. Yulex Pure® - Yulex Pure® is a natural plant-based rubber that provides a cleaner alternative to traditional petroleum or limestone-based neoprene. SD2 Tape 2.0 - This new stitching process brings more durability, waterproofness and flexibility to our wetsuits. Back Knee Emboss - Helps the neoprene to bend more naturally for greater comfort. Water Strainer - The leaky + perforated neoprene drains the water out of your leg instantly.