Sizes vary by model. Heights in the selection range from about 5.0 inches up to 18.0 inches, with common sizes around 15.0–16.0 inches and a 10 x 13 inch head-shaped option.
Most listings use polyester shells and woven fabric. Several models are described as plush or chenille plush to give a soft, huggable texture.
Closures vary by style: some backpacks use a clasp-style closure for the main compartment, while others use zipper closures.
Interior layouts range from a single large compartment to models with accessory pockets or an internal zip pocket for organizing small items.
Suggested ages vary by listing: some state 6 years and up, some 3 years and up, and a few are labeled "All Ages."
Weights in the selection range from about 0.4 pounds up to 0.89 pounds, depending on size and materials.
Reported capacities include 10 liter and 16 liter models; one listing shows a 9.99 liter capacity.