The other week we noted, in passing, that Patagonia were playing with more environmentally benign wetsuits. We should’ve linked to their dedicated page, where you can learn more. Like how the neoprene outer is of 80% non-petroleum based ingredients. (Fortune Mag reckoned it was made with crushed limestone but the Patagonia site is coy on that aspect.) The inner lining is a chloride-free merino wool grid bonded to recycled polyester. Kneepads are PVC-free and are said to be more durable and grippier. Coming for both men and women in 2mm and 3mm versions, to span water temps from 48 to 65°F (9 to 18°C). Long and shortie styles, although limited availability just now. ::Patagonia Wetsuits.