The perfect capacity seat pack for your ultralight adventures, commuting and bikepacking races.
Sew your own commercial quality bikepacking gear with beginner friendly instructions.
“I can’t believe that is homemade”
This 17L bikepacking seat pack by Prickly Gorse is designed to fit nearly all bikes that have enough tire to seat clearance. This allows easy carrying of your camp or commuting gear on bikes that cannot fit a rack.
Uniquely, this design has optional sewing steps to make it work as a convertible backpack for short distances on foot, or for hike-a-bike sections.
This is the same tried and tested design I use to occasionally sell custom made bags at Prickly Gorse Gear
Features
The lightest weight way to carry luggage on your bike
Plastic stiffeners in the base, and optionally the sides and top, to improve stability
Two straps around the seatpost for increased stability, with suggestions for fabrics to minimise scratching the post.
Elastic cord on the top for quickly stashing items such as a jacket
Optional zipper pocket on the top
Optional stashable shoulder straps for off-bike carrying
Printable PDF Pattern and Full Instructions
US Letter, A3, A4 and A1 paper sizes
Every step is illustrated and described in plain verbose language for complete clarity. No confusing wall of text like you can find elsewhere.
The guide goes out of it’s way to help beginners get started with MYOG by additionally including a free 25 page beginner sewing tips ebook.
Sew your own commercial quality bikepacking gear with beginner friendly instructions.
Not for commercial use.
(Prices may include Digital VAT if applicable in your country)
Tried and Tested Design
This is the same tried and tested design I use to occasionally sell custom made bags at Prickly Gorse Gear. Tested around the world.
I’d love to see your adventures with your build!
Suggested Fabrics and Hardware (Notions)
Note: this is to give a rough estimate for budgeting. The sewing guide provides a complete comprehensive shopping and cutting list that should be used over this.
Fabrics are just suggestions. The entire bag could be made from <1 metre of a single fabric for example
Links to example fabrics at RipstopByTheRoll provided (USA). I earn a tiny amount of coffee money at no cost to yourself to support more free patterns. See my page on recommended myog suppliers for alternative suppliers
| Category | Item | Quantity/Length | Notes |
|---|---|---|---|
| Fabrics | Base Panel & Under Saddle | <1 metre/yard | Heavy PVC (trucker tarp) or Hypalon (CSM) or 1000D Cordura nylon |
| Side Panel Lower | <1 metre/yard | 1000D Cordura nylon | |
| Rolltop | <1 metre/yard | X-Pac VX21, ECOPAK EPX200, 420D nylon, or 210D ripstop nylon. 70D is not strong enough | |
| Plastic Sleeve & Cover | <1 metre/yard | 210D nylon, oxford, or 210D ripstop nylon | |
| Grip Fabric | 2 small pieces | Hypalon or scrap inner tubes | |
| Binding | 1 inch (25mm) | 1 metre/yard | Binding |
| Velcro | 2 inch (50mm) wide | <1 metre/yard each | Seat post straps |
| 1 inch (25mm) wide | <1 metre/yard each | Internal liners | |
| Hardware | Square Rings, Side Release Buckles, Cordlock | Mixed | |
| Base Panel Stiffener | 1 piece | 4mm corrugated plastic or similar | |
| Elastic cord | 2 metre/yard | 3mm thickness | |
| Nylon Webbing | 3/4 inch (20mm) | 3 metre/yard | |
| 2 inch (50mm) | 1 metre/yard |
