I purchased these as a gift at a store, but I only tried them on and wore them once. They're cute, and I thought about keeping them, but I usually wear low-heeled shoes, so I haven't had a chance to wear them. It's a waste, so I've decided to sell them now while they're still in good condition. The platform is about 5cm high. Size is 23.5-24cm. They already have a cushioned insole-like material inside to prevent foot pain. Recommended for those who want to wear them comfortably! Thank you!