I used these for about six months while playing basketball. The band has lost its elasticity, so I think it should be replaced. I think I used them around the 0.3 level. The rubber part is slightly discolored, but the lenses seem to be clean. - Brand: SWANS - Color: Clear/Black - Type: Children's goggles - Strap Material: Nylon - Adjustment: Adjustable back strap Thank you for looking.