Heat transfer guidelines and finish - Uses sublimation transfer parameters of 200-215 C and 16-30 seconds. Adjust temperature and time according to your heat press machine. - For best pattern uniformity, remove the mountaineering buckle during heat pressing. - The finished sunglasses case features bright colors that resist fading and color change. Size, design and compatibility - Ultra-lightweight soft sunglasses case measures 7.05 x 1.8 inches for easy carrying. - Wrap-around zipper design prevents items from falling out and keeps belongings secure. - Pracical removable hiking clasp makes it easy to carry on travels. - Compatible with most sunglasses, presbyopes, goggles, and more. Materials and protection - Made of soft, flexible neoprene for protection and durability. - Durable and wear-resistant with a smooth interior that will not scratch plastic lenses. - Provides reliable protection from scratches or damage when dropped. - Versatile use: can also function as a wallet, jewelry pouch, cosmetic case, and more. Use scenarios - Travel and outdoor activities: carry and protect sunglasses compactly in bags or backpacks; clip to a backpack with the removable hiking clasp for quick access. - Customization and gifting: sublimation-ready surface for personalized designs or branding as promotional items or gifts. - Everyday organization: use as a small organizer inside a purse or backpack for items like jewelry, cosmetics, or small accessories.