Blazer by Heart Dagger TALL, Suitable for work and play, Signature lining with internal pocket, Satin-style shawl lapel, Single-button opening, Tacked pockets, Skinny fit - cut very closely to the body, Exclusive to ASOS. 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.