Height matters more than age. A two-month-old may fit into 3-month clothing; another, born earlier, may still wear 1-month. We give size in centimetres and average weight because that's what you measure at the hospital, at home, before you order.

Garments — cardigans, jumpsuits, sweaters

Merino wool gives a supple knit that moves without restricting. Fully fashioned seams lie flat against the skin. If you hesitate between two sizes, take the larger: your baby grows fast, and the knit rolls up without hindering.

Hats — head circumference

Our hats are hand-knitted, stitch by stitch. The merino jersey follows the head without tightening, even over the fontanelles. A tape measure is enough to measure head circumference, just above the eyebrows.

Booties — foot length

Measure the foot from heel to toe, baby lying down. The Loulou booties, hand-knitted, are worn indoors, at home or in the sleeping bag.

Premature babies: sizes 00

Preemie 00 fits babies from 40 to 45 cm and 1.8 to 2.5 kg. All our premature pieces are made in Île-de-France, with flat seams that don't rub, wide openings to limit handling, and the same wool as the rest of the collection — because a baby born early deserves the same softness.

Preparing a hospital bag or putting together newborn essentials? Order one size above the height announced at the scan: your baby will wear these pieces for several weeks, and the knit grows with them.