
OUR MOST DURABLE AND VERSATILE PACK
After more than a year of not making our full-frame ultralight backpacks, they’re back and better than ever. With a few design changes, this pack is for the hiker who demands the best and brightest pack on trail.
Perfect for the distance hiker who rides the line between durable and lightweight. Our pack design has been tested for 6,000+ miles and remained intact and comfortable. It has endless features such as being carbon fiber framed, multicolored, fully customizable to your torso and waist measurement. You also are supporting gear made with purpose in Michigan's Upper Peninsula!
Both of our 40L and 50L packs have the same features, the only difference is their size.


LOVE THIS PACK
“I absolutely love my CTUG 45-liter backpack. It's the only ultralight backpack that doesn't sacrifice comfort or durability in the name of saving ounces. Your collarbones will thank you. I put over 3000 miles on my CTUG pack in 2019 and I can't wait to take it back out again in 2020!”
Christopher B. 2022

QUEEN OF THE CDT
“This pack held up far better than any others I’ve used or seen on all my Thru-Hikes. Considering the ruggedness of the CDT I’d have expected more wear, but this bad b**** is ready to Triple Crown herself...”
Marlin S. 2022
TECH SPECS
Aspect | CTUG-40 Liter | CTUG-50 Liter |
---|---|---|
Width | 10 inches | 11 inches |
Depth | 7 inches | 10 inches |
Weight | 28-31 oz | 29-32 oz |
Volume | 40 Liters | 50 Liters |
Weight Capacity | 35 lbs | 35 lbs |
Roll Top Circumference | 34 inches | 39 inches |
Height (roll top fully open) | 24 inches | 24 inches |
Height (roll top fully closed) | 29 inches | 29 inches |
Frame System | Carbon fiber arrow shafts + 3D Printed Brackets | Carbon fiber arrow shafts + 3D Printed Brackets |
Made In | Hancock, Michigan | Hancock, Michigan |
Materials | Xpac VX-21 | Xpac VX-21 |
SIZING
In order to fit the backpack to your body, we need two measurements. This works best using a flexible tape measure. In order to get an accurate measurement, we suggest having another person help take these measurements.

Waist Measurement:
This measurement is of the circumference of your waist at your iliac crest (hip shelf/top of hip bone). This is where your hip belt will sit on your body and most of the weight of the pack will be transferred to here. Simply locate where the top of your hip bone is, and measure all the way around your waist at that point. Be sure that the tape measure does not slip above your hip bone. We select which size hip belt to put onto your pack with this measurement.
Back Measurement:
This measurement is the distance between your iliac crest (hip shelf/top of hip bone) and your C7 vertebrae. The C7 Vertebrae is located at the base of your neck and can be found by touching your chin to your chest and feeling for the prominent bump that forms on the back of your neck. Take the measurement between these two points and we suggest that you repeat this one to two times to be sure you have an accurate measurement. We use this measurement to determine how much vertical distance to put between the hip belt and the shoulder strap attachment points.