Comprehensive Package: Package includes 2 inner tubes, tire patches and valve stickers. Compatible with both 26" and 27.5" mountain bike tires. Versatile Size Range: The ultra-light mtb inner tubes fit a range of tire sizes, including 26x1.9/2.0/2.1/2.2/2.3/2.4/2.5 and 27.5x1.9/2.0/2.1/2.2/2.3/2.4/2.5, ensuring compatibility with various mountain bike tire sizes. Lightweight and Durable: Weighing just 48g, these inner tubes strike an ideal balance between durability and lightweight design, thanks to advanced TPU technology. Inflation Caution: Avoid overinflating when not installed in the tire to prevent irreversible damage. Prior to installation, check for air leaks with a slight inflation. Seamless Installation: During setup, start with 0.5PSI inflation, ensuring the inner tube adheres to the tire's inner wall. Avoid exceeding 5PSI in empty play to prevent irreparable expansion.

Size: 26/27.5 x1.9-2.5"

Weight: 48g

Matrial: TPU

Valve: Schrader Value

Length: 42mm