Kids shark sheet sets are typically made from polyester microfiber (brushed for softness) or 100% cotton percale.
Shark sheet sets range from toddler 2-piece packs up through multi-piece bed sets. Common configurations are 2-piece toddler sets and 3- or 4-piece sets for twin through queen/king sizes.
Care instructions in listings consistently recommend machine washing and tumble drying for these sheet sets.
Microfiber sheets are typically brushed for extra softness and have a soft, breathable feel. 100% cotton percale is described as crisp, cool, and breathable.
Toddler sets are 2-piece packs that include a fitted toddler sheet and a reversible standard-size pillowcase. They measure about 28" x 52" x 8" to fit a standard crib/toddler mattress (not a twin).
Listings show twin/twin XL measurements such as a fitted sheet around 75" x 39" with a flat sheet about 96" x 66". Queen options list fitted measurements roughly around 80" x 60" with a flat sheet near 102" x 90"—check the individual product listing to confirm exact fitted dimensions and pocket depth.
Listings note features like full or all-around elastic, four-corner fitted elastic, and deep pockets on some sets to help keep fitted sheets secure on the mattress.