Material and construction: Crafted from PU leather and metal with precise cuts and lightweight construction for comfortable wear. Combines skilled craftsmanship with a unique style. Durability and design: Abrasionresistant PU leather components provide durability and an elegant look for crochet bag assembly or projects. Kit contents and use: This PU leather backpack making set includes adjustable shoulder straps, a crochet bag bottom and cover, plus a drawstring rope and buckle to create a backpack. Function and compatibility: Designed for crochet bag projects and bag making or with PU leather craft accessories. Built to help maintain bag shape and add functional details. Practical use scenarios: 1) Build a daily use crochet backpack for commuting or travel. 2) or upgrade an existing crochet bag with sturdy straps and structure. 3) Create a handmade gift for loved ones on occasions such as Valentine's Day, Mother's Day, Christmas or birthdays. Gift suitability: Ideal for moms, wives, girlfriends and female friends who enjoy handmade crafts; as a thoughtful DIY gift. Specifications at a glance: Material is PU leather and metal; lightweight construction; abrasion resistant.