Reusable and very thick. I use one to protect my iphone when i go on bike rides and after hundreds and hundreds of uses the lettering is rubbing off.

These are great but i find them to be a bit pricey for the actual times you can reuse them. I happen to be sitting down by a alpine lake and a chipmunk kept trying to go after my food that i was eating.

They seal and reseal well if you're very careful opening them. They completely conceal any smells. Keeps the smells locked inside and away from the critters scent.

After one trip, that remaining bag is in questionable condition. I'm sure the opsak is good just as the other larger sizes i’ve purchased (from a diff seller) but buy from a different seller so if there’s a problem you can return the item easier.

These have a design flaw that negates their entire purpose, if it happens. Waste of money imho.