✅ Integrated Lumbar Hip Belt
Wraps through the lumbar panel to pull load off the shoulders and drive it into the hips. Fully removable.
✅ Shorter 16.5" Back Length
Reduced height so the pack sits properly on a shorter torso instead of riding above it.
✅ Full Mesh Contact Surfaces
Heavyweight mesh back panel and strap linings for direct, breathable skin contact under load.
✅ 1000D Cordura Construction
Abrasion-resistant fabric built to withstand sustained load and tough conditions.
The Y-CO 1 WF is the Y-CO 1 rebuilt around a smaller back length, not a resized version of the same pack. Every contact point has been reworked: a 16.5" back panel that sits where it should, a shortened hip belt with full adjustment range, and heavyweight mesh across the back panel and strap interiors. Designed and tested in the UK, constructed from the same 1000D Cordura, and held to the same standard as every pack we build.
The Hip Belt Is the Difference
Most packs bolt the hip belt on. On the Y-CO 1 WF it's integrated directly into the lumbar panel, so the belt and the pack work as one structure - a closer wrap around the hips, less shoulder loading, and better weight transfer through the pelvis over distance. The belt is shortened for a smaller waist with plenty of adjustment remaining, and it's still fully removable when you want to run light.
WHO'S IT FOR
✅ Anyone with a shorter back length carrying serious weight
✅ Ruckers training with added weight
✅ Hybrid fitness athletes preparing for competition
✅ Endurance athletes building durability
✅ Those committed to consistent, disciplined training
The Y-CO 1 WF doubles as a plate carrier, allowing you to add weight plates for progressive load training. Whether you're preparing for a rucking challenge, hybrid fitness competition, or military fitness test, this pack delivers the resistance needed to build strength and endurance.
Dual Plate Pocket System – Securely holds up to 2 plates
Primary & Secondary Pockets – Adjustable weight placement for progressive overload
Integrated Hip Belt & Sternum Strap – Locks the load in place through every step
Which Back Length Do You Need?
The Y-CO 1 WF has a 16.5" back length. The standard Y-CO 1 is 18".
Plenty of female ruckers train in the standard Y-CO 1 and always have - if you're around 5'7" or taller, it's likely the right pack for you and there's no reason to size down. The WF exists for anyone whose back length means the standard pack rides high, sits below the hips, and loads the shoulders fully instead of the pelvis. That's a fit problem.
Height is a rough guide. Back length is the real measure, and it varies between people of the same height. To check yours:
Find the bony bump at the base of your neck where it meets your shoulders - tilt your head forward and it's the one that sticks out most. Put your hands on your hips with thumbs pointing back, and feel for the top of your hip bones. Measure the distance between those two points down the line of your spine.
16" – 18": Y-CO 1 WF
18" and above: Standard Y-CO 1
If you land right on 18", either will work - the WF will feel more wrapped through the hips, the standard gives you more pack volume.
Primary Material:1000D CORDURA®.
Dimensions:11.5"W x 18"H x 5.5"D
Shoulder Straps:16.5"L x 5/8" W
Internal Mesh Pocket:12"W x 13"H
Internal CORDURA® Pocket: 11"W x 6.5"H
Sternum Strap:17" - 7.5"L x 1"W
Dear valued customer,
Warranty and terms of use:
Thank you for choosing our backpack as your go-to adventure companion. We take pride in producing high-quality products, and we are confident that our backpack will exceed your expectations. To demonstrate our commitment to your satisfaction, we are pleased to offer you a Lifetime warranty on your backpack.
The warranty covers any defects in materials and workmanship under normal use during the warranty period. If such defects arise during the warranty period, we will repair or replace your backpack free of charge.
To make a warranty claim, please contact our customer service team by email or phone. Please provide us with your order number, a description of the defect, and photos of the issue. We will promptly respond to your inquiry and provide instructions on how to proceed with your warranty claim.
Please note that the warranty does not cover damage caused by improper use, normal wear and tear, or any modifications made to the backpack.
We also do not cover any compensatory, incidental or consequential damages. This is a sporting product and with adding weight to a backpack this is at the users liability, and should be aware of any dangers of doing so. All capacity weights provided are for guidance only.
This warranty is only valid for the original purchaser and is non-transferable.
Thank you for choosing our backpack, and we hope it will serve you well on all your adventures for many years to come.
Sincerely,
Team Yomp Co
Military-grade 1000D CORDURA®, dual ruck plate pockets, padded hip belt, sternum strap, and MOLLE webbing - all included as standard. The best rucking backpack built and tested in the UK for long-distance load carriage, not just gym use.
The Y-CO 1 Rucking packs can hold up to 60lb loaded. For progressive load guidance, The YOMP Standard recommends starting at 10% of bodyweight and building up from there.
Field tested over two years by leading athletes, event competitors, and private sector military training groups the Y-CO 1 is the only complete out-of-the-box rucking system available in the UK. Military-grade 1000D CORDURA®, hip belt, sternum strap, and plate pockets included as standard. Nothing else required.
Yes. YOMP Co is the official UK DEKA Ruck Division sponsor. The Y-CO 1 rucking backpack with weights is used by UK DEKA athletes at sanctioned events and meets all DEKA load requirements.
Yomping is the British Royal Marines term for fast movement under load the same discipline as rucking but with British military roots. YOMP Co takes its name from this tradition and builds the UK's leading rucking backpacks for the community it created.
Generally 20% more cost effective than other mainstream brands. The Hip belt and sternum strap included as standard. Lifetime warranty. The best value premium rucking backpack available in the UK and EU.
Start at 10% of your bodyweight - Initiate level under The YOMP Standard. For an 80kg athlete that's 8kg. Build progressively using YOMP ruck plates from 10lbs up to 60lbs. Generally 10 or 20lb is a good starting point.
The Y-CO 1 is designed for our YOMP ruck plates. The internal plate pockets keep load high and close to the spine. Other plates may fit but we suggest they are rucking specific.
Yes. The Y-CO 1 weighted rucking backpack is used across DEKA, ErgShoot, RedOn, OCR events, hybrid fitness training, and daily loaded walks across the UK and EU. MOLLE webbing allows accessory attachment.
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