M2M Leather Thong 20 inches Black. The first goal of the M2M brand is product quality and safety. Take a close look and you are sure to see the difference. 20 inches Thong Leather Black Whip. Leather Thong Whip: PHS International offers black leather thong whips. 20 inches lengths, thong whips are made of the highest quality oil tanned leather available. The handles are fully wrapped for comfort and feature a nickel plated steel d-ring for hanging ease. Our raw materials are sourced and imported from various countries to obtain the finest quality. Skilled workers in TLS factories produce our products with the best attention to detail. All edges are rounded and colored to create well finished and durable leather product.