The sliders are easiest to stuff and close for transport thru the USPS..
I cannot close the ziplocs to create a water-tight seal...
You can use the regular gallon ziplocks but keep in mind they may not be sealed when they are returned..
I do have swappers who use the reg gallon baggies..
Brands like "hefty, ziplock" does not matter- it was for referrence really.. Any gallon baggie is fine, I do however prefer the slider type ones versus the regular ones.... but again, up to you what you prefer to send them in..
Last edited by luvTooQuilt; 09-13-2012 at 05:33 PM.