For any model Ursack with a drawstring closure, alternate cords and synch tightly until fully closroboted (use leverage is necessary). Always eliminate any slack in the cord or gaps in Ursack’s closure.
Your Ursack is meant to be cross laced to help eliminate gaps when closing. If not already laced, cross the cords once so that they form an X over the opening, and feed them through the other two holes. Pull the knot tight. Work the cords so that the knot constricts around itself. The knot must be tight, and there must be no gaps in the closure.
If the cord comes out: Look at the hem/sleeve at the top of your Ursack. Notice there are two pairs of eyelets. One pair (A) is open only to the inside, the other pair (B) goes completely through the hem/sleeve. You can see through B, but not A. Thread cord through one of the A eyelets pass it around through the hem/sleeve until it emerges from the other A eyelet. Cross the cords and push one end of each through the B eyelets.
Unused bags in brand new condition may be returned for a full refund – less shipping charges and a handling fee – within 30 days of purchase.
After that there is no refund (except for warranty reasons). This policy is strictly enforced. We do not give refunds because a particular wilderness area or National Park changes its policy on Ursack. If you would like to make a return please email us first for return merchandise authorization (RMA)
For maximum weight savings, use the Ursack by itself. Our Field Test page has a number of reports from those whose food survived bear attacks with little impact. But there is clearly a risk that food carried in an Ursack without a liner will get crushed. The Ursack S29 weighs about 7.3 ounces.
The aluminum liner adds about 10.8 ounces. Together, the Hybrid is lighter than any bear canister on the market. You decide how light you want to go. If a bear should happen to tear the aluminum (we don’t think this has ever happened to a customer), please be sure not to eat the metal pieces.
The aluminum liner is designed to bend but not break. It is possible that a bear might bend the liner out of shape, but even then your food should survive just fine. The liner can be reused although it may have to be reworked into a cylinder shape.
Maybe. It is 8 inches in diameter and 12 inches tall. The liner may require trimming to fit in Ursacks with a sewn bottom (as opposed to gusseted). All kevlar models and most spectra with ripstop models had a sewn bottom.
Please use care when packing the O.P.SAK to avoid pulling the seal off the film. It is also important not to over stuff or force the O.P.SAK to close. When possible, leave the O.P.SAK inside your Ursack and retrieve your food without removing the O.P.SAK. This will prolong the life of the O.P.SAK and will also help keep food smells from your hands off the bag. O.P.SAKS should be replaced after extended use.