The Fibonacci 2.0 Backpack – Large
The Fibonacci 2.0 Backpack – Large
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More room for wherever the day takes you. The Phi Backpack - Large pairs a spacious interior with clean proportions inspired by the golden ratio. Crafted from water-resistant smooth leather, it fits a 16-inch MacBook and keeps essentials organised with dedicated pockets inside and out. Padded shoulder straps and a rear luggage strap make commuting and longer journeys more comfortable.
MATERIALS
MATERIALS
Made from premium Italian vegetable-tanned leather sourced from the tannery in Tuscany region. It ages beautifully and lasts much longer than regular chrome tanned leather.
PERSONALIZATION
PERSONALIZATION
✓ If you'd like the engraving in a custom location, simply leave a note with your order. Please note that personalized items cannot be returned.
SHIPPING & TAXES
SHIPPING & TAXES
We provide worldwide shipping!
Processing time depends on the product and takes about 1-3 business days.
Delivery to the USA is free of any customs duties
We ship via UPS, DHL, and FedEx.
Processing time depends on the product and takes about 1-3 business days.
Delivery to the USA is free of any customs duties
We ship via UPS, DHL, and FedEx.
Processing time depends on the product and takes about 1-3 business days.
Delivery to the USA is free of any customs duties
We ship via UPS, DHL, and FedEx.
RETURNS & EXCHANGES
RETURNS & EXCHANGES
We gladly accept returns and exchanges. Please note that personalized items cannot be returned.
More details here ⟶.
SUSTAINABLE PACKAGING
SUSTAINABLE PACKAGING
To ensure minimal impact on the environment we are making our best to pack your goods using reusable and biodegradable packaging materials.
CARE INSTRUCTIONS
CARE INSTRUCTIONS
WARRANTY & REPAIRS
WARRANTY & REPAIRS
At Geometric Goods we are proud to offer quality products, and your satisfaction is important to us. We have a 24 months warranty for production faults from the day of purchase.

Built to Carry
Comfort You Can Trust
We designed the shoulder straps around two essentials: comfort and security. Soft padding makes the backpack comfortable to carry throughout the day, while double stitching and rivet reinforcement strengthen the key stress points—because the parts you rely on most should also be the ones you can trust most.
Designed for Everyday
Function from Within
We designed the interior around a simple idea: everything you carry should have a natural place. The laptop sits protected in its own compartment, smaller essentials stay organised in two slip pockets, and the water bottle has its own dedicated space. We added an interior zip pocket for valuables and an exterior one for the things you need to reach quickly. The water-repellent lining was a practical choice, helping protect what you carry and making the backpack easier to live with every day.
Wherever You Go
Made to Move with You
We added a luggage strap to make longer journeys simpler. It slides securely over a suitcase handle, keeping the backpack in place and taking the weight off your shoulders when moving through airports, stations, and everything in between.
Built to Hold Its Shape
Structure Where It Matters
We reinforced the bottom to help the backpack maintain its shape, even when carrying heavier loads. The added structure prevents sagging and keeps its clean silhouette throughout the day.
Effortless by Design
Secure in One Move
We chose a Fidlock magnetic closure for the balance of simplicity and reliability. It opens effortlessly when you need it and locks securely into place with one intuitive movement.
Everyday Protection
Made for Unpredictable Days
We chose water-resistant leather to help protect the backpack from rain and moisture, while preserving its natural look, feel, and character.