Here's what other sites are saying:
The waterproof, 16-liter Granite Gear Block Rock Solid Compressor Stuff Sack compresses lofty items such a sleeping bag or down clothing, and its square shape nests well inside a pack.
CLOSEOUTS . Save space in your pack with the incredibly lightweight 31L Granite Gear Block Rock Solid compression sack, made of rugged 210 denier nylon with four compression straps and a block shape. Available Colors: BLACK, TIGERLILY, BLUE, MULTICAM, COYOTE.
- Sierra Trading Post
Granite Gear Block Rock Solid Compressor FEATURES of the Granite Gear Block Rock Solid Compressor 210D Nylon Ultralight microcord and cordlock Webbing Haul loop Hypalon grommet Finished seams Space saving shape Maintains shape when compressed The SPECS for 9 Liter Volume: 9 liter Weight: 3.2 oz / 92 g Dimension: 5.25 x 7.25 x 15in. The SPECS for 11 Liter Volume: 11 liter Weight: 3.5 oz / 100 g Dimension: 5.5 x 8 x 17in. The SPECS for 16 Liter Volume: 16 liter Weight: 4 oz / 115 g Dimension: 6 x 8.5 x 19in. The SPECS for 22 Liter Volume: 22 liter Weight: 4.6 oz / 132 g Dimension: 6.75 x 10 x 21in. The SPECS for 31 Liter Volume: 31 liter Weight: 5.3 oz / 150 g Dimension: 7.75 x 11 x 22in.
These sacks differ from Granite Gear's classic Round Rock Solids in that they are designed to become square in shape instead of round when compressed. They have found the squares nest together better when you are packing more than one Rock Solid in a pack. Colors: Assorted
The classic Block Rock Solid Compression Sack, now available in the bloc shape. (210D nylon)
- Altrec Outdoors
Granite Gear Round Rock Solid
$25 - $34
Granite Gear Bloc Solid
ALPS Mountaineering Cyclone Stuff Sacks
Outdoor Research Ultralight Compression Sack
$26 - $54
Gobi Gear Hoboroll
Sea to Summit Ultra-Sil Compression Sack Compression Sack / Dry Bag
$13 - $59
Granite Gear Air Compressor
$28 - $35
Kelty Compression Stuff Sacks
$15 - $23