onesies 3 month old boy

Most listings show newborn/infant size ranges such as 0-3 months and 3-6 months.

Bodysuits are offered in long sleeve, short sleeve, and sleeveless styles.

Care directions most often list machine wash and tumble dry; a few listings note that specific washing instructions are not provided.

Listings commonly describe a classic or regular fit and note single-layer construction with lightweight, breathable fabric.

Some short-sleeve sets list a cotton/spandex blend; at least one description specifies options of 100% cotton or 97% cotton with 3% spandex.