The Blackburn Design Grid Mountain Biking Seat Bag is spacious enough to fit a mountain biking tube, multi-tool, two tire levers and a CO2 inflator. 

• Retro reflective material provides better night time visibility and safety
• Water resistant zipper keeps the contents of your bag dry
• Includes adjustable mounting systems to allow fitment to almost any bike.
• Hook and loop attachment for easy installation
• Tail light loop
• Retro reflective material
• Ergonomic zipper pulls
• Robust, abrasion-resistant outer
• Dimensions: 5.5” x 2” 
• Capacity: .45 liter
• Weight: 31 g