Leak-Resistant Reusable Insulated Lunch Bag with Strap - Large

Pack it, seal it, forget it.

The Black+Blum Insulated Lunch Bag keeps every meal at the right temperature and every spill contained, so lunch stays effortless from your kitchen counter to your commute home.

• Roll-top closure keeps accidental drips inside the bag, not on your desk
• Three-layer lining holds food hot or cold for hours away from a fridge
• Shell made from recycled PET, built to resist wear and water
• Adjustable strap detaches for carrying by hand, shoulder, or bike
• Interior wipes down in seconds, no scrubbing needed
• Folds flat for storage when not in use

• Brand: Black+Blum
• Capacity: 10L
• Dimensions: 31.5 x 17 x 34cm
• Weight: 300g
• Outer Shell: Recycled PET
• Interior Lining: Food-safe PEVA, water-resistant
• Strap: Polypropylene, adjustable, removable
• Closure: Zinc alloy hook, roll-top
• Origin: UK

Pack your meal, roll the top down firmly, and fasten the hook, the tighter the roll, the better it holds. Wipe the interior with a damp cloth after each use. Hand wash the exterior as needed and let it dry fully before folding flat for storage. Keep sharp cutlery away from direct contact with the lining to protect it long-term. For perishable foods, store in a fridge when possible and add an ice pack to extend freshness during transit.

Office workers packing lunch instead of buying it daily. Parents building a school-day routine that survives a backpack. Commuters carrying meals on a bike or crowded transit. Anyone replacing single-use containers with something that lasts.

Most lunch bags force a trade-off between bulky and secure, or compact and prone to leaks. This design was inspired by dry bags used in water sports, edges welded rather than stitched, so drips stay contained instead of escaping into your other belongings. The insulated lining holds temperature, hot or cold, for hours away from a fridge, and the outer shell is made from recycled plastic bottles, giving used material a second life. Every order also donates a meal to someone in need, a small act built into a daily habit.

Can this bag carry liquids like a water bottle on its own?
It's built to contain accidental drips from inside, a loosened cap or an open container, so nothing reaches your other belongings. It isn't designed to hold loose liquid by itself.

Does it keep food hot or cold?
Both. The insulated lining helps maintain temperature in either direction for a few hours. Add an ice pack for extended cold retention on longer days.

Is it safe to pack cutlery directly inside?
Yes, though sharp edges pressed repeatedly against the lining can wear it down over time. A small pouch for utensils avoids the issue.

Is this suitable for adults, not just kids?
Yes. Its minimalist design and neutral colourway make it as suited to the office as it is to a school run.

What is the outer shell made from?
Recycled PET sourced from used plastic bottles, chosen for durability and water resistance.

How do I clean it?
Wipe the inside after each use, hand wash the outside when needed, and let it air dry before folding flat. Machine washing isn't recommended.

Black+Blum is a UK-designed brand known for combining thoughtful design, everyday functionality, and sustainable materials across its food and drink essentials. Created for practical, stylish use at home, work, and on the go, their collection of lunch boxes, bento boxes, water bottles, and vacuum flasks makes healthy routines effortless.