Wore these trekking through Peru in March and they kept me dry. Definitely keeps the heat in so I wouldn't recommend these for warmer weather. They are surprisingly long, which is great because I'm 6 feet tall, and they don't make me look like a marshmallow like I expected them too from some of the pictures. They get the job done and are good quality. They have adjustable velcro on the bottom of the legs which I haven't used yet, but the only thing is that while the leg of the pants is wide, they still don't slip off over my hiking boots, so if you are layering and want them off you'll have to unlace.