Our fitted men's trunks are made from a wonderfully soft and stretchy blend of 95% premium 180gsm cotton and 5% elastane, which is hugely supportive right where you need it. They have a closed fly, a comfortable silky smooth embroidered waistband featuring the British Boxers logo, and flat seams for an amazing feel against your skin. Furthermore 1 from the sale of each pack will be donated to boxing-futures.org.uk who are a charity working to improve the physical and mental health and wellbeing of disadvantaged young people. They empower young people by building positive relationships, developing core soft skills and increasing confidence and motivation and we're proud that together we can help them fight for the future of young British Boxers. Choose your size and receive 5 pairs of stretch trunks in our classic blues - Two Navy, Two Royal Blue and One Kentucky Blue. Materials: 95% Cotton 5% Elastane Available in sizes S - XXL Men's Underwear Size Guide Waist Size Small: 29-31 inches / 73-79 cm Medium: 32-34 inches / 81-86 cm Large: 35-37 inches / 89-94 cm X-Large: 38-40 inches / 96-101 cm XX-Large: 41-43 inches / 104-109 cm XXX-Large: 44-45 inches / 110-115 cm