Sizes vary widely. Small dimensional stickers list overall dimensions such as 8.6" x 2.9" and similar small-sheet sizes. Decal sets commonly use sheets around 12" x 18" and can produce a finished mural of about 37" x 46" when applied.
Many giraffe stickers and wall decals are made from PVC (polyvinyl chloride) or similar adhesive-backed materials. Several listings specify self-adhesive application for direct stick-on installation.
They work best on smooth walls and are marketed for nurseries and children's rooms.
Smaller dimensional giraffe stickers are used as accents for scrapbooks, cards, gift tags, journals, and similar paper crafts. Larger wall decals are used to add a mural-like design to nurseries and children's bedrooms.
Some sticker packs are labeled 'All Ages,' but many giraffe decals are specifically marketed for nurseries, baby/toddler bedrooms, and children's rooms.