Derek Lam Ashten Calf Skin Upper Adjustable Sling Back Block Wood Heels Size 7. These are New with Tags Sample Sale Heels. - Brand New and Never Worn, Tag still on bottom sole. Heel height 4.5" - Adjustable Leather Sling Back Strap Made From Calf Skin Leather & Heels are Block Wood Absolutely gorgeous designer heel, comfortable and goes great with a fall exaggerated flare jean.