I received these Presedee Open Toe Knee Length zip up compression socks at a discount in exchange for my honest unbiased opinion. I got these for my son. He really likes them. They do not make his leg sweat even in 100-degree weather. They zipper up along the sides and the zipper appears to be sturdy. The compression socks work well for him while he is playing basketball and or moving furniture. He likes them. They do not add heat to his body he says they actually feel as if they are not even there but his legs are not sore when using them.