Capacities vary by product, commonly ranging from about 10 fl oz up to 64 fl oz. Everyday sandwich and snack bags most often fall in the 12–28 fl oz range, while larger pouches and carriers are available toward the upper end of that scale.
Common materials listed include food-grade silicone, BPA-free plastics, and polypropylene. Many silicone savers explicitly state they are food-grade or LFGB-certified where noted.
Several silicone pouches state oven use up to 425°F and are described for baking and sous-vide. Microwave use is mentioned for some items with a recommendation to vent before heating, but specific microwave temperature limits are not generally provided.
Products are sold as single items and in multi-packs; examples in the listings include 2‑pack, 7‑pack, and 8‑pack options.