My partner and I purchased this a year ago having seen a young lad pop it on by the road. It looked phenomenonal so we spoke to him and went straight home and bought two. He mentioned the sizes were very big so to get small. It really is an amazing one piece and really does the job. The issue is the sizing is ludicrous....from small to XXL! The model shown is 6,1 and wears a size medium. My partner is 5,8 and just about fits the small. It's big but ok. The waist is enormous though. I'm female, 5,7 and despite desperate attempts can not fit a small. I had to send mine back and now have to get cold an wet while he wears his😭 There is no female version or size xsmall for us slimmer MTB and gravel riders. I'm fit, I ride 5x per week, cross country MTB, road and gravel and am thus not fat. I do need good kit to keep warm plus I live in North Wales so am always in bad weather! I think this piece of kit is so perfect, it's superb quality but am so disappointed that Endura haven't sized anything for us leaner riders. I'd love to test a female version and review it or even have a men's in xsmall. I think there's a huge market for Endura to tap into here that is sadly being missed. Please, please help. Many thanks in anticipation of future product development?! Andy