These long sleeve bodysuits are always a favourite for layering under sleeping bags and clothing. They have an envelope neckline and 3 snaps at the crotch which makes change time easier and also ensures the garment doesn't 'ride up' making it the perfect base layer on little bodies. The extra fine single jersey Merino has a delicious quality tee shirt type feel to it that is just so soft and smooth - the smoothest of our Merino! It has a comfortable stretch to it and as with all our Merino it is sure to retain it's beautiful shape. Known as the 'miracle fibre' when it comes to infant sleep, Merino wool is a naturally temperature-regulating and moisture wicking fibre. It will help to keep baby warm in winter but also cool in the warmer months without waking up clammy. It has the ability to naturally lock away odours, releasing them when washed or aired - this can mean less washing... yaye! Merino is also naturally fire retardant. but Merino is a naturally low fire danger fabric. Awards 2022 OHbaby! Best Baby Merino Award - Silver - The Sleep Store So soft and smooth Great base layer Temperature regulating Nice stretch Retains shape Breathable Moisture wicking Snaps at crotch Envelope neckline Award winning product