Common sizes reported include approximately 11 x 8 inches (rectangular) and 10 x 10 inches (square). Available sizes may vary by product or listing.

Birthday pillows commonly use polyester-based materials, for example 100% microfiber or 100% polyester fills, with covers described as microfiber or knit polyester.

Care guidance is mainly spot or wipe clean. Some listings advise line dry or lay flat to dry; keepsake pillows may specify spot clean only and recommend avoiding tumble drying, ironing, or dry cleaning.

Keepsake pillows often include spaces for a baby’s name, birth date, time, birthplace, weight, and length. Some listings note that a permanent marker can be used to write these details on the pillow.

The items shown are labeled for indoor use.

Closure styles vary: some pillows have no visible closure while others are finished with a sewn seam.

Designs range from character or keepsake motifs (with framed baby information) to whimsical novelty themes, such as a light-pink cake with playful shapes.

Most listings sell a single pillow; the number of pieces is commonly listed as 1.