KemBag features an ultralight, strap-free design engineered specifically for endurance cyclists. Weighing in at just 30 grams for the pack itself, it hooks directly to your jersey collar and sits neatly in your back jersey —giving you hands-free hydration without shoulder straps, chest harnesses, or restrictive bulk.
The KemBag hydration system includes a 1.1-liter (37 oz) quick-release sliding bladder designed to lie flat and contour comfortably against your back.
KemBag Pack: 30 g (1.05 oz);
Hydration Bladder (Empty): 136 g (4.79 oz);
Total Empty System Weight: 166 g (5.85 oz)
No. KemBag stays locked in place using your jersey's natural tension combined with a top slider hook mechanism that secures the reservoir directly to the pack, eliminating shift and bounce over rough pavement or gravel.
KemBag is a lightweight NO STRAP design backpack to hold ice, ice packs or hydration packs against your back while you ride. It is designed to clip on your back jersey. Inserted between your back and your jersey. The ice provides direct cooling to your core, helping you stay comfortable and perform longer in hot weather. It comes with a zip bag that can be used to keep the ice from dripping. You can also leave the zip bag half an inch open if you want ice water dripping.
🧊 Local Cooling
Fill the zip bag with ice and seal it completely.Place the pack on your upper back — the sealed design maintains cooling for over 60 minutes, providing steady, localized relief.
💧 Controlled General Cooling
Add ice to the zip bag and leave it half an inch open.This setup keeps your upper back cool while allowing gradual water release. When you reach the drop bar position, the melted ice spills slightly, creating a refreshing general cooling effect across your back. (Fan favorite)
🔥 Max Cooling
For maximum performance, fill the zip bag with ice and leave it half an inch open or closed, then add extra ice around the bag to fill the pack.This configuration delivers intense cooling, ideal for criterium racing or high‑heat conditions.
Typically 45–90 minutes depending on outdoor temperature, ice size, ice pack size, and how hard you're riding. Always use the clear zip bag with NO holes to keep the cooling longer.
No — slide down your jersey zipper to chest level. It clips on and off quickly at the back of your jersey. Then slide your zipper up to secure the backpack in place. You can reload ice at a rest stop or café without any hassle.
The backpack sits between your jersey and your back. It is designed not to shift or bounce while riding. Most riders forget they're wearing it within a few minutes. We do not recommend wearing loose jersey.
Hand wash or machine wash with cold water and mild soap. Air dry. Do not tumble dry.
One Size Fits All
Our NO STRAP backpacks are designed to fit most body types and carry styles. No need to worry about sizing—one pack works for everyone.
KemBag is designed to be as light as possible so it doesn't affect your ride. It weighs 29 grams.
reusable ice packs up to 15x23 cm. Most gel ice packs available at pharmacies or supermarkets will work perfectly.
Yes! All our backpacks come with a 2-year manufacturer's warranty covering defects in materials and workmanship. If you experience any issues, please reach out to our support team and we'll be happy to help.