Trousers by Heart Dagger, Smart thinking, Zip fly, Hook-and-bar closure, Side pockets, Skinny fit, Cut very closely to the body. Heart Dagger welcomes ASOS to The House of Heart Dagger with an exclusive tailoring collection. A House which has been built on the very foundations that it strives to uphold and take forward: timeless style, rich fabrics, precision-cut suits and a touch of modern-day dandy.