The Spin Bag 18L is the foundation. The belt, the Space Bag, and the strap are what turn it into a run-commute system, and the kit includes them from day one instead of leaving you to add them later. One kit in place of a running vest, a commuter pack, and a gym bag.
Spin Bag 18 commute kit
One system, set up for the run in and the walk home. The Spin Bag 18L is a 100% waterproof roll-top pack built like a drybag, heat-welded at every seam, with a 16-inch laptop sleeve. The kit adds the pieces that make that morning work, in the box from day one instead of three orders later.
- Spin Bag 18L, built like a drybag, 16" laptop sleeve, Welded seams
- Waist Pocket Belt, clips on for the run and off at the desk (+2L)
- Space Bag, seals wet shoes and kit outside the pack (+9L)
- MOLLE Strap System, attaches the Space Bag securely
Four pieces, 1328 grams, 27 liters of capacity. Built from recycled polyester. Designed in Lund, Sweden.
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We answer your most common questions.
What's included in the Spin Bag 18 Commute Kit?
The Spin Bag 18 Commute Kit includes four pieces: the Spin Bag 18L (100% waterproof roll-top pack built like a drybag, heat-welded at every seam, with a 16-inch laptop sleeve, 950 g), the Waist Pocket Belt (clips on for the run and off at the desk, +2 L for phone, keys, and card on the hips, 215 g), the Space Bag (+9 L sealed storage for damp shoes and wet kit outside the pack), and the MOLLE Strap System (two adjustable webbing straps from 19 to 75 cm that lash the Space Bag flat against the Spin Bag 18L).
What is the Spin Bag 18 Commute Kit used for?
The Spin Bag 18 Commute Kit is built for run commuting. The Spin Bag 18L carries a 16-inch laptop and the day's essentials in a 100% waterproof main compartment on the way in; the Waist Pocket Belt locks the pack to the hips so it stops bouncing at running pace and unclips at the office; the Space Bag and MOLLE Strap System turn the system into a 27-liter carry for the walk home with damp shoes and used kit sealed outside the dry main compartment. One kit replaces a running vest, a commuter pack, and a gym bag.
What is the total carbon footprint of the Spin Bag 18 Commute Kit?
The Spin Bag 18 Commute Kit has a total carbon footprint of 16.18 kg CO₂e across all four components: 8.88 kg from materials, 0.91 kg from packaging, 6.06 kg from energy, and 0.35 kg from transport. Kilometer Studios measures CO₂ for every part (zippers, labels, materials, transport, factories) and prints the per-product number on the tag and the product page.
How do the Spin Bag 18 Commute Kit components work together?
The Spin Bag 18L is the foundation: a heat-welded waterproof rolltop pack with an internal 16-inch laptop sleeve. The Waist Pocket Belt clips to the front of the pack for running and unclips at the destination so the bag reads as a clean everyday backpack. The MOLLE Strap System threads through the Spin Bag 18L's MOLLE webbing to create a flat anchor point; the Space Bag clips onto the MOLLE Strap System and sits flat against the back of the pack, sealing damp shoes and wet kit outside the dry main compartment. Add or remove the Space Bag and Waist Pocket Belt depending on the day.
Is the Spin Bag 18 Commute Kit waterproof?
Partially. The main bag, the Spin Bag 18L, is 100% waterproof with heat-welded seams throughout and a rolltop closure, built like a drybag, so a 16-inch laptop and clean clothes stay dry in heavy rain. The Waist Pocket Belt and MOLLE Strap System are not waterproof; the Space Bag is a sealed external compartment designed for damp shoes and wet kit on the way home. The waterproof main compartment is the dry zone; the external accessories handle the wet kit.
What makes Kilometer backpacks different from other brands?
Kilometer backpacks are designed specifically for run-commuters. Every bag features a modular system that lets you customize your setup with accessories, and our materials are chosen to handle sweat, rain, and daily abuse while still looking sharp at the office.
Can I add accessories to any Kilometer backpack?
Most of our backpacks use a MOLLE-compatible attachment system. Accessories like the Space Bag, Waist Pocket Belt, and Bottle Holder work across the MOLLE-equipped lineup (Spin Bag 30L, Spin Bag 18L, Everyday Rolltop, Pannier Rolltop, and Backpack Pro 16). The Trail Pack and Packable Rolltop are minimalist designs without MOLLE.
What is your return policy?
We offer a 30-day return policy on all unused products in original packaging. Custom kit bundles can be returned as a complete set. Shipping costs for returns are covered by the customer.
Do you ship internationally?
Yes. Kilometer Studios ships worldwide. International orders are accepted from every country our logistics partners can reach; shipping costs and delivery times vary by destination and are calculated at checkout.






