I purchased these 3 years ago for my then 6 and 4 year olds who were taking summer swim lessons. These goggles work well and keep the water out. My daughter just lost hers at the beach last week so I had to come on to buy a replacement pair. When adjusting the strap on my son's goggles at the pool yesterday a piece of the strap broke off. It's to be expected after 3 years of wear and exposure to hot sun for the plastic to break down a bit. It was just the piece on the end of the strap so he's still wearing them without complaints. They do leave marks around the eyes because they create a suction on the face in order to keep the water out. My daughter is now 9, but she has a small nose bridge and a lot of goggles leak on her, but these don't. My 7 year old son has a bigger head than the 9 year old and these still fit him well. Definitely worth the $10 we spent on Amazon 3 years ago.