Ultra-lightweight and guaranteed chafe-free underwear every time. 

Shop Blue Mountains Running Co for best deals on Mens Running Underwear.
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• World's lightest full-leg running underwear at under 40 grams
• Designed by runners - no inner thigh seam and super smooth stitching
• Highly breathable and wicking to keep you cool and dry
• Stay comfortable all day long with fitted 3D stretch
• Performance waistband and 6" inseam for full leg protection
• No chafing or your money back
  
• 85gsm Italian blend - 90% polyamide / 10% elastane

"Helps to combat chafing, incredibly light, very breathable and comfortable and ideal for all conditions." - Ultra168