Sierra Designs Flex Capacitor 40-60 Pack

Peat

Sierra Designs
Flex Capacitor 40-60 Pack

4.7

From $145.99 $219.95

up to 34% off

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The Sierra Designs Flex Capacitor 40-60 Pack is a truly unique take on a lightweight backpack. Yes..that says Flex, not Flux, sorry time travelers. For the rest of us linear time travelers, this pack rocks a gusset system that easily expands from 40-60 liters. This is done with the easy adjustment of a few straps. The Y-FLEX DAC Pressfit aluminum stay provides an internal structure, meaning you can carry heavy loads comfortably. The EVA foam that pads the lumbar area and shoulder blades provide space for air flow between the pack and the back panel. Cutting down on the back sweat, whether this is an overnight trip, or thru-hike.

Products on Sale are Discontinued Styles or Colors.

Product Description

Item No. 10465204

FEATURES of the Sierra Designs Flex Capacitor 40-60 Pack

Expandable Volume
2 Stretch mesh side pockets
2 Stretch mesh hydration pockets on shoulders
Zippered hipbelt pockets
U shaped top access zipper
Small stash pocket in lid
Ultralight weight
Lightweight "Y" Flex DAC suspension

Product Specifications

Features:	Suspenders, Hip Belt Pockets, Ultralight
Weight:	43.2 oz
Torso Range (Small / Medium):	16 - 19 in.
Weight (Small / Medium):	41 oz
Weight (Medium / Large):	42 oz
Gender:	Mens
Best Use:	Backpacking
Pack Capacity:	40 Liters / 2440 Cubic inches
Trip Length:	Expedition
Frame Type:	Frameless
Pack Access:	Top

Product Reviews

Rated 5 out of 5 by Touketsuken from Great pack! [This review was collected as part of a promotion.] An excellent pack for the price and has served me well the entire time I've owned it. This was the second one I purchased as I gave my original to a friend so they could have a reliable pack.

Date published: 2023-05-30

Rated 5 out of 5 by Ramui from a review that has purchased both the old and new m I thought it was just a simple color. There were many revisions in the previous version. The main fabric has been changed. Gray is more stiff than the new black. The new model was softened with a lower Dyer thread. According to Andrew Skurka, who developed the product, the new fabric has improved tensile strength compared to the old version. The number of water bottle pockets has increased and the material of mesh has changed. The mesh pockets that were only on the right side of the backpack shoulder strap ran on both sides. Messi's material has also been changed to a lighter material. In addition, we added a part that holds the string to improve the fact that it was not handled well when using 40 liters. I thought it was just a change of color and a sale, but a lot of the improvements have been made.

Date published: 2020-12-08

Rated 5 out of 5 by JayTeeWNY from Nice Pack! [This review was collected as part of a promotion.] Although I have not had a chance to run this pack through it's paces, I am already impressed with quite a few features. I am going to be able to adjust this pack to all sorts of trips. I can literally adjust it's volume down to a very small capacity and also be able to fill it right up. It seems like it will be quite sturdy enough to pack up a full 60 liters. Right now it feels very comfortable, I am sure once I wear it a while I will have to make some adjustments. Already this is 1/3 rd to 1/4 the weight of my old NorthFace pack I am replacing. I am getting older and now more cautious about the weight I carry, this pack should help out a lot! I love Sierra design equipment!

Date published: 2020-05-09

Rated 5 out of 5 by Anthony from Solid Pack [This review was collected as part of a promotion.] Got this pack for a short trip in the eastern sierras. It did a fantastic job with all the weight and never felt too heavy. All my gear was able to fit with room to spare. Loved the front water holders though I'd recommend softer plastic bottles for it. Overall a great pack.

Date published: 2021-06-14

Rated 4 out of 5 by Renegade from the dream of connoisseurs of universal equipment h [This review was collected as part of a promotion.] Conclusions. It seems that with the Sierra Designs Flex Capacitor 40-60, the dream of connoisseurs of universal equipment has come true. If you are just starting to lighten your equipment, the Flex Capacitor is a good choice, because it will still hold everything you have and withstand the loads placed on it. And when your equipment is reduced in volume, tighten the front slings and get a wonderful and, at the same time, light (1250 g) backpack. If you usually go to the mountains for a few days - a week, but in the future think about longer trips or expeditions and doubt whether you will have enough backpack for 40-50 liters, Flex Capacitor will again be a good solution. Because +20 liters at any time. Do you often go to the mountains on your own, but from time to time you take your children with you and dream of extra volume in your backpack? Flex Capacitor again. Do you want to fly with hand luggage and do not want to buy a separate small backpack, which then have to cling to the outside? And here is the Flex Capacitor. In my opinion, Sierra Designs Flex Capacitor 40-60 is a great universal backpack with excellent weight and load, good strength, thoughtful details, good design and a good price for all these benefits. But if your loads constantly exceed 15 kg, I would advise to look in the direction of Osprey Atmos AG. Fill both backpacks with your weight in your favorite store and determine which one will be more convenient for you. Or, take the Flex Capacitor for a test in our #BankEquipment and play with it to your heart's content in real camping conditions. Advantages: incomparable transformer from hand luggage to 60 liter monster with perfect adjustment of the center of gravity, transformation does not require effort and time, extremely easy for the loads specified by the manufacturer, practical and beautiful design, large pockets on a belt, big side pockets with reasonable zoning of fabrics, large pocket on the strap, a large margin of safety in fabrics and accessories, good price. Disadvantages: it takes time to get used to the lack of a front elastic pocket, no reinkaver, you should improve the pullers on the runners, I miss the inner pocket on the valve.

Date published: 2021-10-31

Rated 5 out of 5 by David from Updated Straps Look good [This review was collected as part of a promotion.] While the older version’s notorious weak point were the volume straps, the construction on this looks really solid. I look forward to getting out on the trail with it.

Date published: 2020-09-23

Rated 4 out of 5 by Pacemaker from Flexible pack [This review was collected as part of a promotion.] Seems like a great pack. Purchased for a thru hike that I haven’t gone on yet so I haven’t gotten too much time with it. But it’s comfortable when loaded. Plenty of ventilation on the back and the pockets are nice. Very cool that you have freedom to go between two different sized bags. Frame and hip belt are both removable for an even lighter pack for a quick day hike.

Date published: 2021-01-26

Rated 4 out of 5 by John from Great pack [This review was collected as part of a promotion.] It is a great light weight pack but just a bit small for my typical needs. I wish I would have went with the next size up. It's perfect for an overnight or weekend but maybe not for a week long trip.

Date published: 2023-03-23

Sierra Designs Flex Capacitor 40-60 Pack Reviews - page 2

Size Guide

Sierra Designs Flex Capacitor 40-60 Pack

TORSO SIZE	Small / Medium	Medium / Large	-
Torso Range	16" - 19" / 40.6 - 48.3 cm	18" - 21" / 45.7 - 53.3 cm	-
Hip Fit with S/M waist belt:	29" - 32" / 73.7 - 81.3 cm	29" - 32" / 73.7 - 81.3 cm
Hip Fit with M/L waist belt:	32" - 35" / 81.3 - 88.9 cm	32" - 35" / 81.3 - 88.9 cm