Greylock
The Jacks ‘R’ Better philosophy in creating our 900 Fill Power option.
First of all, we have not redesigned the quilt shells. Whether the insulation is 800 fill power down or 900 fill power down they are the same width and length. A three season model has a two inch baffle and a winter model has a three inch baffle. That means for a given quilt model, the internal volume is the same. The difference is that it requires less 900 fill power down by weight to fill that volume than it does 800 fill power down. Thus 900 fill power three season quilt will weigh about 1.5 ounces less than the same quilt with 800 fill power down. Similarly, a 900 fill power winter model will weigh about 2.25 ounces less than the same winter quilt with 800 fill power and a 900 fill power summer quilt will weigh about 0.75 ounces less than a summer quilt with 800 fill power down. The basic performance of the quilts is established by the quilt dimension/design not by the insulation material. We provide a 15-22% overstuff factor in all our quilts. This over stuff compensates for deviations from certified standards and it provides for field variations in humidity from laboratory rating and testing standards. It also reduces down shifting beyond normal expectations.
Again, the insulating performance of an 800 fill power quilt and a 900 fill power quilt of the same model are identical. The 900 fill power version is simply lighter.
Coming This Fall
Description: The Greylock 3 torso length under quilt is designed with current state-of-the-art features and is intended for the hammock user who is seeking an ultralight approach to bottom insulation. It is a dual differentially designed quilt and has body contouring radial baffles. In use the Greylock under quilt is effortless to attach and it will maintain its loft under any conditions. The Greylock 3 under quilt comes equipped with full length, channeled shock cord suspension that allows the user to make minor adjustments to their under quilt position. For those desiring to use the traditional JRB corner under quilt suspension the Greylock also comes equipped with corner mounting tabs. When filled with 800 fill power down this torso length under quilt weighs just 14 ounces. When filled with equal volume and loft of 900 fill power down its total weight is reduced to 13.6 ounces. It comes complete with a JRB compression sack.
Note: Torso length under quilt users typically use their sit pad or back pack as foot and lower leg insulation.
Note: Torso length under quilt users typically use their sit pad or back pack as foot and lower leg insulation.
Specs:
- Length: 52 inches
- Width: 42 inches
- Loft: 2.5 Inches
- Material: 1.1 oz., 30 denier, ripstop nylon
- Insulation: 800 or 900 fill power goose down
- Weight: 14 ounces
- Temperature Rating: 20°-25°
Specs:
- Length: 52 inches
- Width: 42 inches
- Loft: 3.5 Inches
- Material: 1.1 oz., 30 denier, ripstop nylon
- Insulation: 800 or 900 fill power goose down
- Weight: 18 ounces
- Temperature Rating: 0°-5°
Greylock 3
with 800 Fill Power Down
Price: $189.95
Sale Price: $169.95
Greylock 3
with 900 Fill Power Down
Price: $209.95
Sale Price: $189.95
Greylock 4
with 800 Fill Power Down
Price: $249.95
Greylock 4
with 900 Fill Power Down
Price: $279.95
Note: 1. Final charges will include shipping and handling fees.
2. Virginia residents add 5% Virginia State Sales Tax.
ReviveX
(DWR) Treatment
