95% Cotton, 5% Lycra 1 Pair Closed Fly The Oiler & Boiler Nantucket Trunk Boxer Short is created with 95% Cotton which provides a soft & snug fit. The neat & narrow contrast waistband features a repeated Oiler & Boiler logo, which when combined with the bold stripes & eye-catching stitching makes this refreshing style of Oiler & Boiler mens underwear a must-have.