1. Size: 31 * 21cm. Weight: 36g. Material: Polyester. 2. Adopt high quality materials, environmentally friendly. Fabric in hollow design, soft and comfortable, breathable. 3. The connection opening is reinforced, and the multi-channel precision suture is firmly connected, and the quality is visible. 4. Fine workmanship, exquisite edge process, double-layer trace is precise. 5. Strong magic stickers design, suitable for repeatedly sticking, durable. 6. Scope of application: snoring, chin dislocation, etc. Tips: This product is an auxiliary protective gear, such as the seriousness of the quarter. Note: 1. Low oxygen, hypoxia and other environments are disabled. 2 Child applies need to be reasonably used under the supervision of adults. 3. Please wear this product correctly, don't worry too tightly, affect the blood circulation, wear to the comfort.