Buff Aqua (Wool Buff) 100% Merino Wool - Natural warm wool material that keeps your warm even when wet. Multifunctional - Has 12+ different ways to wear. Temperature Regulating - Natural breathability helps to keep you cool in summer. Seamless Construction - Prevents chafing and skin irritation. Odour Preventing - Natural odour prevention qualities to keep your Buff fresher for longer.