Trail Bum BIG TURTLE is an ultralight backpack weighing just 250g. With a versatile 13-19L capacity and a simple, practical design, it is ideal for everyday use, day hikes, bikepacking, and more.
Comfortable to carry, lightweight, easy to use, and reasonably priced.
BIG TURTLE is the backpack that stays with me for around 300 days of the year. I use it for everyday trips to work and around town, as well as for casual bike rides. It also makes a useful backup bag for longer rides and bike camping trips.
With its versatile 13-19L capacity, it fits naturally into almost every part of my daily life. Of all the backpacks I own, this is the one I reach for most often, and easily one of my favorites.
Trail Bum BIG TURTLE｜An Ultralight Backpack That Fits Naturally into Daily Life and the Trail
Weighing just 250g, this Trail Bum favorite is an easygoing backpack for everything from city streets to mountain trails.
BIG TURTLE is one of Trail Bum's most popular and recognizable backpacks.
Built around a simple drawstring-bag-inspired structure, it combines minimalist design with practical features shaped by real hiking experience. Its versatile 13-19L capacity works well for everyday use, day hikes, and as a secondary bag on bicycle trips. With unnecessary details stripped away, the clean design feels just as natural in the city as it does outdoors.
The slim profile holds its shape even when lightly packed and sits comfortably along the back. It offers just the right amount of space for days when you want to move freely and carry only what you truly need.
FEATURES
Ultralight construction weighing just 250g
Versatile 13-19L capacity
Practical size for both everyday use and hiking
Slim structure maintains its shape even with a light load
Large front mesh pocket for quick-access storage
Close-fitting design helps reduce movement while walking
Wide shoulder straps provide a comfortable carry
Chest strap with an integrated whistle
Side drawcords allow compression to suit the load
Suitable for day hikes and SUL-style overnight trips
SPEC
Brand: Trail Bum
Model: BIG TURTLE
Capacity: 13-19L
Weight: 250g
Main Material: Nylon
Mesh Material: Polyester
Recommended Use: Everyday use, commuting, school, day hiking, bikepacking, and secondary bag
The appeal of BIG TURTLE goes beyond its low weight. It adapts naturally to the amount you are carrying, sits comfortably against the body, and offers a simple, understated experience without unnecessary complication.
It is equally useful for everyday travel, weekend hikes, or as a lightweight backup bag packed inside your main luggage on a cycling trip. Combining the freedom of ultralight gear with the ease of something you will want to use every day, BIG TURTLE is a true Trail Bum classic.
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Lightweight, Stable, and Built to Last - Designed Around Ease of Use
BIG TURTLE is defined by its lightweight construction and simple, drawstring-bag-inspired design.
Despite weighing just 250g, the number of seams has been kept to a minimum, creating a streamlined and durable backpack with no unnecessary details.
The slim, gusset-free body sits naturally against the back. Tightening the shoulder straps brings the pack even closer to the body, helping it remain balanced and stable even when carrying only a small amount of gear.
This close-fitting design reduces unwanted movement while cycling, hiking, or traveling.
Comfortable Shoulder Strap Design
The wide shoulder straps distribute the load across a larger area for a more comfortable carry.
Padding has been kept to the minimum needed for a pack of this size, maintaining a thin and flexible feel without sacrificing comfort. The straps conform naturally to the body and help reduce strain during extended use.
Practical Details
A large mesh pocket on the front provides quick access to rain gear, water bottles, headlamps, first-aid supplies, and other items you may need throughout the day. With careful packing, the available capacity can even support SUL-style overnight hikes.
A chest strap is included to help stabilize the pack when carrying a larger load. Its buckle also features an integrated whistle for use in an emergency.
Side drawcords allow the entire pack to be compressed according to the amount of gear inside, helping maintain a stable and comfortable fit with loads of different sizes.
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◆Returns and Exchanges
Please inspect your order as soon as possible after it arrives.
Parts, apparel, accessories, and other cycling goods may be returned or exchanged. Return and reshipping costs are covered either by the customer or by our store, depending on the circumstances.
Complete bicycles cannot be returned or exchanged for reasons of customer preference. We will only accept returns in the event of a product defect or damage during delivery.
“In-store Stock” items are currently available at an Eirin store or in our warehouse. Each item will be inspected before being dispatched.
“Special Order” items are ordered from the manufacturer or an authorized Japanese distributor. After the item arrives, we conduct a final inspection before dispatch.
※If “In-store Stock” is unavailable, please select “Special Order.” We will contact you by email once the item has arrived from the supplier.
※If the manufacturer or distributor is also out of stock, the item cannot currently be purchased. Select the “Notify me when available” button to receive a restock notification.
◆From Order to Delivery
※① If an item is out of stock, we will contact you by email and ask whether you would like to change or cancel the item.
※② Items cannot be added, changed, or cancelled after the order has been confirmed.
※③ Once your order has been dispatched, we will email you with the shipping confirmation and tracking number.
◆Shipping Carrier
Orders are generally shipped by Seino Transportation.
Another shipping carrier may be used depending on the contents of your order or the delivery area.
◆Pickup at Eirin Stores in Kyoto City
Shipping is free when you collect your order from one of our street-front stores in Kyoto City.
Complete bicycles generally require approximately 1-2 weeks for assembly and inspection before pickup.
Some parts and apparel are stored in our warehouse and may require approximately 1-5 days before they are ready for pickup.
※Due to system limitations, the following payment methods are available for store pickup orders:
Shop Pay, Credit Card, Bank Transfer, and JACCS Financing
Customers wishing to use another payment method should select standard delivery instead of store pickup.
◆Pickup at a Seino Transportation Branch
※Shipping for complete bicycles is free when the bicycle is collected from an eligible Seino Transportation branch.
This service is available only for complete bicycles. Parts, cycling goods, apparel, and accessories are not eligible.
For purchases under ¥55,000 including tax and excluding payment fees, the shipping charge is reduced to half of the standard rate.
Different charges apply to Hokkaido, Okinawa, and remote islands. These charges are still lower than residential delivery rates.
💬 STAFF REVIEW
BIG TURTLE is the backpack that stays with me for around 300 days of the year. I use it for everyday trips to work and around town, as well as for casual bike rides. It also makes a useful backup bag for longer rides and bike camping trips.
With its versatile 13-19L capacity, it fits naturally into almost every part of my daily life. Of all the backpacks I own, this is the one I reach for most often, and easily one of my favorites.