- Size: 43 • Biped insoles with real wool to keep feet comfortably warm, even at sub-zero temperatures. • The aluminum bottom reliably protects against ground cold. • Warm and pleasantly soft insoles, suitable for shoes, boots, hiking shoes, as well as sports, rubber, and riding boots. • They can be individually cut to size, perfectly fitting each shoe size, including half sizes. • Biped shoe insoles are durable, dimensionally stable, easy to care for, and particularly long-lasting, made in the EU.