Elasticated Drawstring Waist STAMPD Company registration number: 06866013 | VAT number: GB 865368680 Wave Relic – a capsule apparel collection that’s inspired by three uniquely designed surfboards. Elevating the idea of surfwear, these black tech shorts from the trio’s collaboration are made using nylon, then lined with a skin-tight spandex inner short. They’re then completed with three pockets and a drawstring-adjustable waistband.