These best-selling black trunks are crafted from a cotton-stretch blend for everyday comfort. They’re cut to sit low rise on the waist and feature the brand’s signature monogram waistband. 3 pack of black trunks Cotton blend Low rise Signature monogram waistband Calvin Klein Underwear, curated by Reiss, is a collection of lingerie designed to elevate the underwear drawer and work perfectly beneath your existing Reiss garments. Feel comfortable from the first layer.