Sac à dos The Phi – Format moyen
Sac à dos The Phi – Format moyen
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Le sac à dos The Phi – Format moyen est fabriqué à la main en cuir, avec des proportions équilibrées et suffisamment d'espace pour vos essentiels du quotidien. Son cuir lisse résistant à l'eau, son compartiment dédié à un MacBook de 14 pouces et ses poches judicieusement disposées vous aident à rester organisé. Ses bretelles rembourrées assurent un port confortable lors de vos déplacements.
DETAILED DESCRIPTION
DETAILED DESCRIPTION
Thoughtful space. Balanced design.
The Phi Backpack - Medium takes its proportions from the golden ratio, bringing clean architectural lines to an everyday leather backpack. Its understated silhouette feels equally at home with workwear or a relaxed weekend outfit, with room for your essentials without unnecessary bulk.
Inside, a dedicated compartment accommodates a 14-inch MacBook. Two slip pockets keep smaller belongings easy to find, while a separate pocket holds a bottle or travel mug upright.
The Fidlock magnetic closure makes opening and closing the backpack quick and intuitive. A discreet pocket keeps your AirTag concealed, giving you a dedicated place for the tracker.
Padded shoulder straps add comfort on longer days. When travelling, slide the rear luggage strap over your suitcase handle to keep the backpack close and your shoulders free.
Handcrafted with a focus on longevity, the Phi brings considered organisation and refined craftsmanship to commuting, short trips and everyday plans.
MATERIALS
MATERIALS
Crafted from premium smooth leather with a water-resistant finish, chosen for everyday use and a clean, refined appearance. Country of origin: Portugal.
Finished with a Fidlock magnetic closure and padded shoulder straps for comfortable carrying.
DIMENSIONS
DIMENSIONS
- Height: 32 cm (12.6 in)
- Width: 29 cm (11.4 in)
- Depth: 11 cm (4.3 in)
Laptop fit
Dedicated interior compartment fits a 14-inch MacBook.
Interior pockets
- Bottle or travel mug pocket: accommodates items up to 8.5 cm (3.3 in) in diameter.
- Two slip pockets: 15 × 13.5 cm (5.9 × 5.3 in) each.
- Hidden pocket designed for AirTag.
PERSONALIZATION
PERSONALIZATION
Up to 8 characters, engraved in 8 mm uppercase letters. 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 depending on the product and takes about 2-5 business days.
Delivery to European Union is free of any customs duties and takes 2-3 business days.
We are shipping using services 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.