Alpine Luddites

Cluster 1/2 Frame Bag

A partial frame bag. Perfect for long day rides, gravel racing, multi-day tours, fat bikes, and Brevets. Allows you to carry food, tools, extra layer and still use standard water bottle cages.

This simple bag has a #10 YKK waterproof zip and mud flap over the slider. Made of waterproof VX21(all colors other than VX42 colors) or in VX42 (black) fabric in your choice of colors. the perimeter is of the bag is VX50/100 Cordura faced fabric for excellent durability and waterproofness. just tell via email colors or put in the 'notes" section when you check out. multiple, random, colors are fine to just tell me.

I recommend using sideloading water bottle cages with these bags.

 download the custom bike bag order form to see all the options and colors.

The Cluster comes in four stock sizes  and custom sized, but the reality is everyone Cluster bag I build is custom fitted. I'd rather see you get exactly what you want than deal with predetermined sizes. Add the the huge range of bikes out there stock sizing seems pointless for me to offer. the only reason i offer stock sizes is to be listed on's gear reviews.

      • Small: inside top length 17", overall height 4"
      • Medium: inside top length 18.5"; overall height 4.5"
      • Large: inside top length 20"; overall height 5"
      • XL: inside top length 21.5"; overall height 6"
      • For a custom size please send me, bike size and model, your inside top tube length and head tube length, if you have one, and how tall you want the bag. most range from 3"-6".
    • order by the inside length of your top tube. if in between sizes I always recommend going bigger, a squashed end is better than gaps.