Volume4 L
Weight160 g
Dimensions17 × 32 × 8 cm
Pockets3 + key hook
Topo Designs · Moonlight Crossbody Bag
A 4-litre, 160 g crescent bag, worn across the body or on the shoulder.
The Moonlight Crossbody Bag is a 4-litre, 160 g crescent-shaped crossbody bag in recycled nylon ripstop with a PFC-free water-repellent finish. During the week, it goes across your chest: your phone in the zipped pocket on the front, your keys on the hook, the rest in a bright yellow interior where nothing gets lost. On Saturday, strap let out, it rides on your shoulder to the market.
City · Weekends · Travel
Keys on the hook, the yellow interior where nothing gets lost.

To scale
Wider than an A4 sheet, barely taller than a phone standing upright.
31.8 cm wide, 16.5 cm tall, 8.2 cm deep: it sits flat against your hip.
- Moonlight16.5 × 31.8 × 8.2 cm
- Phone15 × 7 cm
- A4 sheet29.7 × 21 cm

What fits inside
4L
4 litres, three pockets and a hook: no more keys lost at the bottom.
On the front, a zipped pocket keeps what you take out often. Inside, everything shows at a glance against the bright yellow: a patch pocket open at the top, a zipped pocket and a hook for your keys. A daisy chain runs down the front.
- Your phone, in the zipped pocket on the front
- Your keys, on the hook inside
- Small things, in the two inside pockets
Inside and out
On the bike, then emptied out on a blanket: the keys, the pockets, the yellow interior.


Colours
All black with a beige strap, or mustard, forest green and black.
Black / Neutral
Black from top to bottom, beige strap and label: the most understated.
Mustard and Forest
A mustard top, a forest-green side, a black base and a turquoise trim: the one that gets noticed.
Colour on this page
The details
An angled zipped pocket, a daisy chain, a shoulder strap that adjusts.



Worn
On the hip, across the chest or on the back: the shoulder strap does all three.
10 photos
Small crossbody bags
Four bags to wear across the body, from the 4-litre crescent to the flat pouch.

Moonlight Crossbody Bag
4 L · 160 g · 17 × 32 × 8 cm
The crescent in water-repellent ripstop: a zipped pocket on the front, two inside, a hook for your keys.
This bag

Block Bag 3.5L
3.5 L · 19 × 27 × 6 cm
The small square bag that holds its shape: two zipped pockets on the front, a key clip inside.
See the Block Bag
Mini Shoulder Bag
1 L · 18 × 12 × 4 cm
The smallest: over the shoulder, round the waist through the loops on the back, or as a pouch without its strap.
See the Mini Shoulder Bag
All Adventure Accessory Bag
0.85 L · 18 × 25 × 2 cm
The slim pouch that opens in two onto its mesh pockets, with a removable strap.
See the All AdventurePhotos to the same scale, by the longest dimension: 31.8, 26.7, 17.8 and 25.4 cm.
Topo Designs
A sewing machine in a Fort Collins basement, in 2008.
Jedd Rose buys a sewing machine and sews the first bags in his basement in Fort Collins, Colorado; Mark Hansen asks around for people who can make them.
The two founders wanted gear like the kit they grew up with: tough, practical, classic, the opposite of throwaway and overcomplicated. The same bag goes from the city to the trail.
Topo Designs guarantees its bags against defects in materials and workmanship for a reasonable lifetime, excluding normal wear, accidents and lack of care, and would rather repair than replace. For a bag bought from Eiken, the claim goes through us.
Eiken's take
- Why we chose it
- 160 g for 4 litres, three pockets and a key hook in a bright yellow interior: you fill it without thinking, and find everything without looking.
- Worth knowing
- 4 litres means your phone, wallet, keys and a notebook: for a picnic or a laptop, you need a backpack.
- Who it's for
- Hands free in town, a tough bag that doesn't look like mountain kit: for anyone who travels light and wants to find everything without rummaging.
Baptiste, Eiken
Specifications
- Volume4 L
- Weight160 g
- Dimensions16.5 × 31.8 × 8.2 cm (height × width × depth)
- Storagemain compartment, zipped pocket on the front, inside patch pocket, inside zipped pocket, key hook
- Attachmentsdaisy chain on the front
- Carryadjustable shoulder strap; patterned jacquard strap on some colours
- Zipsreinforced YKK
- Fabriclightweight 100% recycled 200D nylon ripstop, PFC-free water-repellent (DWR) finish
- Made inVietnam, Fair Trade certified factory
- Topo Designs guaranteedefects in materials and workmanship, for a reasonable lifetime
- Topo Designs reference931527 (Black / Neutral: 931527024)
Specifications, dimensions and weight: Topo Designs data (topodesigns.com and topodesigns.eu, October 2026); dimensions converted from inches.
Questions
What are the dimensions and weight of the Moonlight Crossbody Bag?
16.5 × 31.8 × 8.2 cm (height, width, depth) and 160 g empty, for 4 litres.
Is the Moonlight Crossbody Bag waterproof?
It's water-repellent, not waterproof: a PFC-free DWR finish makes water bead up on its ripstop. In steady rain, water eventually gets through: put your phone in a pouch.
How many pockets does it have?
Three: a zipped pocket on the front, a patch pocket and a zipped pocket inside, plus a hook for your keys.
Does the shoulder strap adjust?
Yes: shortened, it holds the bag across your chest; let out, it leaves it on your shoulder. Some colours come with a patterned jacquard strap.
Moonlight Crossbody Bag or Block Bag?
The Moonlight, 4 litres and 160 g, is a soft crescent in water-repellent ripstop that sits flat against you. The Block Bag, 3.5 litres, is a small square bag that holds its shape, with two zipped pockets on the front.














