Mons Royale Women's Sylvia Boyleg - Merino Wool Better than your old cotton undies, the Sylvia Boyleg is a super soft brief with comfortable low leg cut that won't ride up when you're out getting active. Materials Air-Con Single Jersey, 83% Merino Wool, 13% Nylon, 4% Elastane Features Light signature Mons Royale elastic for a smooth silhouette No side seam for comfort 140gsm Merino Air-Con Fabric: light, dry, strong and odour resistant. Weight: 140 gsm Size Mons Standard Fit What's sustainable? ZQ Certificate   Non-mulesing Merino wool ZQ is a hallmark that certifies a farmer is meeting the highest standards in the areas of animal welfare, environmental care, and social sustainability - e.g. traceable, No mulesing, Hand selected Environmentally friendly dyes and water processing & fair manufacturing process -   read more