Mobilization, outdoor, hiking, campers, hunters, biking, football, jogging, running, football. Flip the top cover, drink, and drink with one hand. There is no need to unscrew the straw cap. Made of high-quality materials, it not affect your taste. No , easy to clean and healthy. : Our standard size straw caps are compatible with standard size bottles, ID: 12 ounces (about 340.2 grams), 18 ounces (about 510.3 grams), 21 ounces (about 680.4 grams) compatible, compatible with classics Kanteen water bottle. Possible compatibility: There is a 1.8 inch (about 4.6 cm) screw mouth diameter in the stainless steel bottle. The solution for out-of-office water replenishment needs. Trim the straw to fit your standard saliva bottle; the alloy carabiner is for placing items, suitable for hanging on bags and ropes, etc. colour:Black Material:plastic Package Contents: 4 x Straw lid 8 x Brush 8 x Straw 4 x Alloy Carabiner(Random color, no specified color can be ) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.