I received these as hand-me-downs, but I won't be using them, so I'm offering them for sale. I haven't used them at all since receiving them. The red one is 90cm. The green one is 80cm. They show signs of use, but I think they are in relatively good condition. Please purchase only if you understand that these are used items. Please refrain from purchasing if you are overly concerned about details. They will be shipped in simple packaging.