Newborn skin is still developing and is more sensitive than adult skin. Conventional cotton may contain pesticide residues and can be treated with chemical finishes during manufacturing. Organic, GOTS-certified cotton is produced under strict standards that avoid these substances, making it a gentle and natural choice for your baby's everyday clothing.

Organic cotton refers to the way the cotton is grown, but it doesn't necessarily cover the manufacturing process. GOTS (Global Organic Textile Standard) certification ensures the entire production process—from harvesting and processing to dyeing and finishing—meets strict environmental and social standards. If a product says "organic cotton" without GOTS certification, the manufacturing process may not meet those same standards.

If you're unsure about sizing, it's usually best to choose one size larger. A slightly roomier onesie gives your baby more comfort and room to grow. Many parents also prefer starting with the 0–3 month size instead of newborn, as babies often outgrow newborn clothing very quickly.

Many parents prefer snap closures because they allow you to open only the lower portion of the onesie during diaper changes without completely undressing your baby. This helps keep your little one warm and comfortable during overnight changes while avoiding zipper pulls near delicate skin.

Wash the onesie using a gentle, fragrance-free, dye-free detergent and avoid fabric softeners or dryer sheets, as they can coat the natural cotton fibers. Tumble dry on low or medium heat to help preserve softness and durability. If the onesie becomes soiled with spit-up or milk, washing it promptly will help prevent stains from setting.