"Don't be surprised if you forget it's there in the first place. Breathability? Check. Body temperature regulation? Check. Uncanny ability to magically whisk away body odor? Also, check." - Fashion Beans - Best Thermal Underwear 2024 The Men's Core Lightweight Crew Base Layer is the first building block for comfort in mild to cool temps. Our lightweight 200gm Signature Merino Blend ensures superior breathability, temperature management and unrestricted movement with 4-way-stretch, while melding the luxuriously soft on-skin properties of rayon from bamboo and the unrivalled odour resistance of merino wool. A naturally better blend and our bestselling base layer for a reason. FEATURES Lightweight 200gm Signature Blend of Merino Wool and Rayon from Bamboo Slim Fit 4-Way Ultra-Durable Stretch Flatlock Seams Sculpted Panels Scoop Bottom UPF50+ Sun Protection 100% Certified Non-Mulesed Merino Wool Okeo-Tek 100 Certified Model Wears Size Medium Height 185cm/6'1, Chest 94cm/37", Waist 31/79"