【EASY INSTALLATION】IMPORTANT: Please check your frame for threaded holes (for mounting mountain bike water bottle cages) before purchase. It takes less than 60 seconds to install these bike water bottle cages. Use a 3mm allen wrench to secure the stainless steel bolts to the bike rack. Easy to install and remove. 【DURABLE AND LIGHT】The water bottle cage is made of CNC machined PC material, heat treated for a strong and lightweight design. Use your foot to step on the water bottle cage for road bike, bike crush, the cycling water bottle cage will not even crack, the weight-bearing capacity is very strong, worth having. The most important thing is that it is only 1.24oz (35.2g). It will not give you any extra burden during the ride, so you can travel easily. 【FLEXIBLE DESIGN】 The water bottle holder has arms that wrap around the bottle for a secure and firm hold so you don't have to worry about it falling out during your ride. Make sure a full water bottle is securely fastened while riding, whether you're riding fast on the road or on bumpy trails. 【DAZZLING SURFACE】The bike water bottle cages is about 35.1g (1.24oz), size 13.2*7cm*10cm (5.2*2.76*3.94 inches), light weight and beautiful appearance.This cup holder for bicycle has 5 different gradient colors to choose from, as you like.This cycling drink holder at the same time has a strong weight-bearing capacity and good quality , not fragile, worth having. 【UNIVERSAL FIT】This lightweight bike bottle carrier is designed to fit most sized of cycling water bottles. Specifically designed for a cyclist, it allows you to access your water bottle while riding easy access at all times. Mount both cages on your bike for maximum hydration. Please don't worry, these Bike Water Bottle Holders are designed to be used for long term,if you receive your shipment and are missing bicycle bottle pocket accessories, please inform us and we will follow up closely.