3 (5F) increase in temperature would increase the tire pressure by about 1%.If you inflate the tires in a cool garage in the morning (18C / 65F) and later at higher temperatures (35C / 95F), it may in an increase in inner tube pressure (e.g. 0.5 bar/8 PSI).Especially when on high temperature black asphalt pavement with temperature exceeding 65C (150F), the tire pressure may the allowable maximum value. In addition, too high tire pressure can cause the tire to from the rim during cycling, which can in the risk of injury.If pneumatic tires are stored at 60C (140F) or higher (e.g. in a car in hot weather), deflate the inner tube to 1 bar/15 PSI to avoid valve deformation.Product name: Ultra-light road bicycle inner tubeFeatures: Small size, light weight, good toughness, cost-effectiveSize: 700 x 18 23 25 28 30 32C Recommended scope of applicationValve length French 65mmMaterial: TPUcolour: orangePackage Contents:1 x Super Light Bicycle Inner TubeOnly 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.