Photochromic Yarn for Knitting & Weaving

·Material: 100% polyester·Yarn count: 150D/2, 300D/2, etc·Packaging: 250g/roll, 500g/cone, 1kg/bobbin or customize ✅Logo Customize ✅Packing Customize ✅Spec Customize  Description:Photochromic Yarn is a smart, color-changing yarn that reacts to sunlight or UV light by transforming from one color to another—then returns to its original shade when removed from the light source. Features:1. UV-Activated Color Change: Yarn visibly changes color under sunlight or UV exposure, and fades back in indoor light.2. Durable & Colorfast: Maintains color-changing ability even after multiple washes and uses.3. Soft & Flexible: Comfortable to wear, smooth to knit or weave, and suitable for both handcraft and machine processing.