Outdoor Retailer: Granite Gear Uberlight CTF3 Drysacks

Remember yesterday’s post about Brooks-Range’s ultra ultralight winter Rocket Tent? Well, CTF3 fabric, the same extremely light, strong, waterproof material used in the Rocket, is being introduced in a line of stuff sacks for Granite Gear.

The Uberlight CTF3 Drysacks are fairly transparent roll-tops with stitch-free seams in a “space saver shape” (meaning they’re more boxy than round, so as not to leave gaps in your pack).

CTF3 is madeby Cubic Tech, a company that specializes in high performance fibers with high strength-to-weight ratios, such as sail cloth and aerospace materials.

The Uberlight CTF3 Drysacks will come in four sizes: 7 liters, 10 liters, 13 liters, and 18 liters, and in four translucent colors: blue, green, yellow, and orange.

They're “half the weight of ultralight!” proclaims Granite Gear’s product information. Unfortunately, those weights aren’t included in that information, but I will add them once known. Until then, if you know how much “ultralight” weighs, just divide that in half! (Edited to add weights below on 7/27/09)

Granite Gear says, the drysacks weigh less than half of similarly sized sil nylon sacks, but the CTF3 fabric (a non-woven laminate reinforced with Dyneema fibers) has five times the tensile strength.

Personally, I’ve checked out both the Uberlight CTF3 Drysacks and the Brooks-Range Rocket Tent and can vouch for their extreme lightweight and strength (Brooks-Range let me reef on a piece of the fabric at their booth). Suffice to say, if they can build a 1 pound 7 ounce tent out of CTF3, stuff sacks shouldn’t weigh much at all. However, that weight-to-strength ratio doesn’t come cheap.

Granite Gear’s Uberlight CTF3 Drysacks will be available February 1, 2010.

7L: 4.5" x 7" x 17"
10L: 5" x 7.25" x 20"
13L: 5.25" x 7.75" x 21"
18L: 6" x 8.75" x 22.5"

7L: $38.95
10L: $41.95
13L: $44.95
18L: $48.95

7L: 15 grams
10L: 17 grams
13L: 19 grams
18L: 21 grams


(Edited to add weights above 7/27/09)

Filed under: Outdoor Retailer, Gear News


0 reviewer rep
4 forum posts
July 27, 2009 at 1:30 p.m. (EDT)

I've heard Granite Gear is releasing a new series of packs, based on an Escape frame, that will be the replacement of the Vapor frame. Any info on this?

Alicia MacLeay (Alicia)
1,684 reviewer rep
4,217 forum posts
July 27, 2009 at 1:54 p.m. (EDT)

Coldspring, here's what it says in the Granite Gear 2010 materials:

Escape AC Suspension

Escape AC suspension is the next step in the evolution of ultralight frame technology. It's similar to our award winning Vapor suspension, however instead of being a flat sheet, with flat foam, the Air Current consists of a molded HDPE sheet and a molded foam pad. Not only does it fit the 3D contours of your back, and is engineered to flex with your movement, the Air Current suspension has integrated air channels, which make for a cooler carry. The hip belt is swappable, and the shoulder harness adjusts easily for a custom fit torso length.

There is an Escape AC 60 (2 lbs, 15 oz, short and regular torso) and a women's Escape AC 60 Ki (2 lbs, 15 oz, short and regular torso). Both are part of Granite Gear's ultralight packs line, for 15-40 pound loads.

They're top loaders with floating lids, made from Cordura brand fabrics.

Thanks for pointing this out.

Alicia MacLeay (Alicia)
1,684 reviewer rep
4,217 forum posts
July 28, 2009 at 3:12 p.m. (EDT)

Thanks to Granite Gear, I've added above the weights of the drysacks (15 - 21 grams).

Granite Gear tells me the Uberlight CTF3 DrySacks were a late addition to their 2010 product line they had to wait until they had a sufficient number of production samples to determine weights. They average the weights of a number of sacks to come up with accurate figures.

7L: 15 grams
10L: 17 grams
13L: 19 grams
18L: 21 grams

Here's some additional info from Granite Gear:

The sacks are made from a fabric originally used for sails on high performance sailboats. The sacks weigh less than half of similarly sized sil nylon sacks, but have five times the tensile strength. The fabric is a non-woven laminate reinforced with Dyneema® fibers. They will be made in the United States and be available 2/1/2010. The sacks will be offered in four sizes and four colors.

This post has been locked and is not accepting new comments