Tretorn - Gullwing Topspin (Beluga/Moonrock/Ivory/Red Clay) - Men's: The new Tretorn Topspin is a classic court style with a distinct one stripe midsole. A waxed canvas shoe with lime pigskin lining throughout. The Topspin has a suede gullwing, branded eyelets and a logo tread, gum rubber outsole.