From the first stretch at 6 a.m. to the last feed at midnight, this is the outfit doing the work.

Smiling sharks and little fish the friendly version of the shark phase.

Forbes named these the best baby pajamas in 2025. The sleeper is the workhorse of the under-layer soft against the skin, quick to change in the dark, and built to survive the laundry a newborn puts it through.

Material. TENCEL™ Lyocell with a touch of spandex for stretch.

The print. Cream-ivory ground (navy binding) with watercolour smiling sharks great white, whale, hammerhead, and tiger — in white, grey, and blue tones, with small fish and blue stars.

Construction. Fold-over cuffs cover the hands for the first few months no mittens to lose then fold back when the baby wants them free. A two-way zipper runs chin to ankle and opens from the bottom for diaper changes, the neckline is tagless, and the shoulder and crotch seams are reinforced where a sleeper gets pulled on and off twice a day.

Sleepers and sleep bags work together. The sleeper is the layer underneath it isn't meant to provide the warmth on its own. Pair with a 1.0 TOG TENCEL™ Sleep Bag for a 21–24°C nursery, a 0.5 TOG muslin sleep bag for 24–27°C, or wear alone in a warm room above 24°C if the baby protests the sleep bag.

Why TENCEL™ for a sleeper. A sleeper is worn most nights and washed two or three times a week, so we match the fiber to the job: TENCEL™ Lyocell keeps its softness and shape through heavy laundering. Our muslin pieces answer a different brief swaddles, crib sheets, and 0.5 TOG bags use Tanboocel® Bamboo Viscose for breathability in the heat.

Sizing. 0–3M, 3–6M, 6–9M, 9–12M, 12–18M, 18–24M. Size to current measurement. A sleeper that's too long bunches at the hands and ankles and rides up overnight.

Care. Machine wash cold and tumble dry low. Don't bleach, and don't iron the printed areas. TENCEL™ keeps its smooth face through the twice-or-thrice-weekly wash a baby's wardrobe demands.

Safety & certification. Tested to Health Canada's Children's Sleepwear Regulations (SOR/2016-169), and to CPSIA and ASTM standards. The material is certified to OEKO-TEX Standard 100, and Loulou Lollipop is a Certified B Corporation.

Material & Care:

• Gentle on sensitive skin and the planet, TENCEL™ Lyocell contains biodegradable fibers made from responsibly sourced eucalyptus tree pulp. It's made using a closed-loop production process where 99.5% of the solvents are reused during manufacturing, helping to minimize waste.

94% TENCEL™ Lyocell, 6% spandex