The listings note the bags are made of plastic, specifically polyethylene and polypropylene (plus dye and ink), and list health facts such as BPA-free and phthalate-free.
They use a slide/slider (Slide Zip) seal, described as a 'sealed-at-first-slide' design. Some freezer slider bags are noted as durable enough to slide and close 100+ times.
Listings say the bags can be hand-washed and dried for reuse and note they are recyclable. They also advise not to reuse bags after storing raw meat, fish, eggs, or potentially allergy-triggering foods.
Yes—listings mention festively designed holiday quart slider bags featuring seasonal designs intended for gifting or storing holiday creations.