Charlotte Stone Donna Sandal in Rainbow EUC Rainbow retro vibes A core favorite platform clog with retro vibes. Colorful striped suede uppers, leather ankle strap, memory foam insoles, and a 2.5" platform and 4" heel (so it feels like you have on 1.5" heel). You'll want to don your Donnas to the coffee shop, vintage shopping, out to dinner then straight to the disco.