The length of the shoulder strap is adjustable, suitable for adults and children. This is a leak-proof water bottle that you can take anywhere. Please clean it with warm water (below 50) before first use. Do not boil it in boiling water, do not heat it in a microwave oven, do not use a hard brush or steel ball to avoid scratching the product. Turn the cover to open or close it. When closing the lid, please open the spout of the kettle, press the spout into the cup, squeeze out the air in the cup and turn it to the last grid to ensure a good sealing effect. Kawaii water bottle creative cute straw bowl. You can DIY your water bottle with 4 unique fun 3D stickers and 3 cute flat stickers. Material: food grade silicone/PC/ABS Size: 12.7 x 17.1 cm 400ml capacity Color:blue,pink,purple,yellow (optional) Note: Due to the different monitor and light effects, the actual colour of the item may differ slightly from the colour shown in the pictures. Thank you! Please allow 1-2 cm error due to manual measurement. Package includes: 1 x water bottle