CNBTR 210D Polyester Flat Sewing Waxed Linen Cord Handwork Waxed Thread 180m for Leather (Brown) Large pull-off strength, wear resistance, inelastic. It is slightly waxy but not sticky Great for sewing book bindings and other projects where a sturdy thread is needed that stays put and won't tear at edges. Professionally made and a useful and practical tool. Suitable for DIY handicraft, luggage, handbags, wallets and other leather goods.