The Quiksilver M Sessions 5 mm Split Toe Boots come with StretchFlight neoprene for incredible warmth and comfort. Thanks to the environmentally friendly limestone derivative neoprene, made from used tyres and bluesign® certified, 24 % less CO2 emissions are emitted per Neo. Liquid Flex Seal seams on the outside keep feet dry, while GBS seams provide maximum flexibility and durability. The rear ankle pull loop makes it easy for you to get in. FeaturesStretchFlight neoprene for more warmth, comfort and flexibility 24 % less CO2 emissions per wetsuitEnvironmentally friendly neoprene made from limestone derivative, produced from used tyresWarmFlight® thermal fleece lining for warmthLiquide Flex Seal outsideGBS [glued and blind stitched] seams for maximum flexibility and minimal water ingress insideHydrolock ankle sealing system coupled with hook-and-loop closureRear ankle pull loopAqua Alpha, non-toxic, water-based adhesiveDrainage holes