product: short john fabric: superflex recycler jersey made from 100% recycled fibers, combined with superlight foam, for lightweight and great thermal retention exterior fabric silicone stretch made from 100% recycled fibers, combined with our eco friendly super light foam, it's the ideal blend of flexibility and thermal retention interior fabric neoprene foam type: superlight foam, partially recycled, oyster shell content body type: short john thickness: 2/2mm thickness entry system: back zip entry system exterior seam detail: flatlock stitch flatlock stitched seams that are locked but not sealed lining: recycler 100% recycled jersey and liner made from recycled pet plastic bottles