flintronic Foldable Backpack 16L – Ultra-light packable waterproof daypack

At a glance

The flintronic Foldable Backpack is a packable rucksack built for the “carry a spare just in case” scenario, without weighing you down. On paper it stands out for being extremely light (listed at 0.21 kg) and genuinely compact when folded, while still offering a 16L capacity for day trips and everyday travel.

Where this kind of bag usually wins is flexibility: you can stow it into its own pocket/inner compartment and only unfold it when you need extra space—think groceries on the way home, a spare bag for a weekend trip, or a lightweight daypack for a hike that doesn’t require heavy kit. It’s not meant to replace a fully featured hiking pack, but it can be surprisingly practical for what it’s designed to do.

The essentials

The bag opens out to 45 x 28 x 13 cm and folds down to 19 x 17 x 3.5 cm, so it’s the sort of item that fits into luggage or a cupboard without taking over your life. The idea is simple: travel light, unfold when required, then pack it away again.

It uses waterproof-resistant Oxford fabric described as water-resistant and anti-tear, plus long-lasting double-way zips with extended zip tabs—small details that matter if you’ve ever wrestled with a cheap zipper mid-commute. There’s also a breathable mesh back area and adjustable shoulder straps that are designed to feel less restrictive during movement.

What you’ll notice day to day

Storage is set up with multiple pockets: one main compartment, one front pocket, and two side pockets. There’s also an interior valuables compartment, which is useful when you’re keeping smaller essentials from disappearing into the bottom of a bag.

A practical example: if you’re heading out for an afternoon walk and end up stopping for food afterwards, you can unfold the pack, throw in a light layer in the main compartment, keep your phone/wallet in the valuables section, and use the front pocket for keys or tickets. When you’re finished, it folds back down and goes away again.

That said, remember it’s a foldable 16L daypack. The compact design is a trade-off—if you need a rigid frame, lots of padding, or heavy-duty hauling for bulky loads, this may feel more like a light organiser than a “proper” hiking rucksack.

Key takeaways (the good, and the limit)

The strongest reasons to consider it are the combination of very low weight and foldability, plus the waterproof-resistant fabric and the zip design (double-way zips with extended tabs). Those features make it more reliable for day-to-day use than some ultra-compact packs that feel fiddly.

The main limitation is that it’s built around portability. If you’re planning longer, heavier hikes or carrying dense equipment, you may find it better suited to lighter loads and organised essentials rather than “everything, all at once” packing.

It’s also unisex in design and built for outdoor sport uses like hiking/climbing/biking, but whether it suits you will depend on how you prefer your load to sit and how much structure you expect from a pack.

Tech specs

• Type: Foldable packable backpack / rucksack
• Capacity: 16L
• Weight: 0.21 kg
• Unfolded size: 45 x 28 x 13 cm
• Folded size: 19 x 17 x 3.5 cm
• Material: Waterproof-resistant Oxford fabric, anti-tear cloth (as described)
• Compartments: 1 main pocket, 1 front pocket, 2 side pockets, interior valuables compartment
• Closures: Double-way zips with extended zip tabs
• Fit & back: Adjustable shoulder straps, breathable mesh back (as described)

Who it suits (and who should skip it)

It’s a good fit if you want a lightweight, waterproof-resistant daypack that packs away into your bag or luggage easily, and you primarily carry everyday essentials and light hiking items. It also makes sense if you like the idea of having an extra bag on hand for travel, commutes, or quick outings.

It may not be a great match if you routinely carry heavy or bulky gear, or if you need a more structured, rigid hiking pack experience. In that case, you might find that a more traditional rucksack design (with more support) suits you better.

Should you buy it?

A solid pick if you value portability first—especially when you need an ultra-light backpack for day trips, travel add-on storage, and organised carry with pockets. The 0.21 kg weight and compact folded size are genuinely the headline here, and the waterproof-resistant Oxford fabric plus the zip design help it feel more dependable than a purely “spare bag” option.

You may want to skip it if your priority is maximum comfort under heavy loads or a fully structured hiking pack setup. The flintronic Foldable Backpack looks like it’s aiming for practical lightness rather than long-haul support.

Mini FAQ

Is it really easy to pack away?

Yes—it's described as foldable and able to be folded into its own inner pocket area, making it practical to keep on hand for travel or outings.

How waterproof is it?

The fabric is described as water-resistant and made from waterproof-resistant Oxford cloth. If you need full weatherproof performance for heavy rain for long periods, it’s worth being realistic and treating it as water-resistant rather than “submersible”.

What space does it offer?

The capacity is listed as 16L, with a main compartment plus additional front and side pockets.

Does it have somewhere for smaller valuables?

There is an interior valuables compartment mentioned, designed to help keep small items from getting lost.