Improved skin regeneration, improved sleep
NATTCOLLAGEN™ SLEEP TECH
Gift set long pajamas
Gift set long pajamas
£0.80 a night
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★★★★★ "Since I discovered Dagsmejan's nightwear, I don't want to wear anything else. I really appreciate the comfortable feeling on the skin and the perfect temperature regulation." — Heike
The sleep benefits
The sleep benefits
Wake up to smoother, more radiant skin — naturally. The Night Renew collection is designed to enhance your skin’s overnight regeneration while ensuring the ultimate comfort for restorative sleep. NATTCOLLAGEN™ is clinically tested and dermatologically proven. Collagen-infused botanic fibres support your skin’s moisture balance and elasticity while you sleep:
- +40% skin hydration
- +12% smoother skin texture
- Dermatest 5-star seal
- 100% would recommend
“Nighttime is when our skin’s natural regeneration processes are most active, making it the ideal moment to support hydration and renewal. In a clinical and dermatological study, participants wearing NATTCOLLAGEN™ sleepwear showed a significant increase in skin hydration (+40%) and improved skin refinement (pores), as confirmed by corneometry and Antera 3D measurements. The products were awarded the Dermatest 5-star seal for skin friendliness, underlining their excellent compatibility and efficacy.”
— Dr. med. Werner Voss, Specialist in Dermatology, Venereology, Allergology, Phlebology and Environmental Medicine
Testing protocol: Clinical testing | Flat testing | Torso testing | Real-life wear testing
Details & care
Details & care
Details
- NATTCOLLAGEN™ fabric: 47.5% lyocell, 47.5% viscose and 5 % elastane/ lycra
- Flat ergonomic seams and slightly front placed side seams mean that you have a minimum of friction at night
- Tagless design, all care instructions are printed inside the garment
Care
- Wash up to 40 degrees Celsius. Do not tumble dry. Do not bleach. Do not dry clean
- You can also find the care instructions printed on the inside the garment
- Learn to care for super-fine natural fibres in our care guide
Natural & sustainable
Natural & sustainable
Night Renew is crafted from botanic fibres combined with NATTCOLLAGEN™ Technology, where marine collagen peptides are permanently embedded inside the fibre itself. Unlike surface coatings that can fade or wash away, these collagen peptides are locked into the polymer structure of the yarn before the fabric is even knitted. Dagsmejan sources wood and pulp from sustainably managed forests and plantations.
- Permanent infusion — The collagen peptides are part of the yarn, so they won’t wash out.
- Naturally sourced — Derived from marine collagen peptides and integrated into the spinning solution during fibre production.
Eucalyptus fibres: Europe and Africa
Sleep technology: Switzerland
Knitting and dyeing of the fabric: Portugal
Garment making: Romania
Fit & size
Fit & size
Sleep Long Sleeve Top:
- Semi-fitted
- Chest width (S): 87 cm (34.3″) +/- 5 cm (2″) per size for XS - M, +/- 6 cm (2.4″) per size for L - XXL
- Body length (S): 69 cm (27.2″) +/- 1 cm (0.4″) per size
Sleep Pants:
- Loose-Fitted
- Waistband width (S): 71 cm (28″) +/- 5 cm (2″) per size for XS - M, +/- 6 cm (2.4″) per size for L - XXL
- Inleg seam length (S): 75.5 cm (29.7″) +/- 0.5 cm (0.2″) per size
Gifting this set and not sure about her size? Check out our size guide for more information. And don’t worry, if you get the size wrong we offer free replacements and returns to the US, the UK, CH and the EU.
Model information:
Free returns & comfort guarantee
Free returns & comfort guarantee
Sleep in your Dagsmejan sleepwear for up to 14 days, if you don't love it return it for a full refund. Free returns from the US, the UK, CH and the EU.
Free delivery for all orders above 150 GBP.

Size Guide
| SIZE | XS | S | M | L | XL | 2XL |
| EU/DE/CH | 34-36 | 36-38 | 38-40 | 42-44 | 46 | 48 |
| Chest | 79.5-84.5 | 85.5-89.5 | 90.5-95 | 96-101 | 102-107 | 108-113 |
| Waist | 63.5-68.5 | 69.5-73.5 | 74.5-79 | 80-85 | 86-91 | 92-97 |
| Hip | 87.5-92.5 | 93.5-97.5 | 98.5-102.5 | 103.5-107.5 | 108.5-112.5 | 113.5-117.5 |
| Inleg length | 78 | 78 | 78 | 78 | 78 | 78 |
| SIZE | XS | S | M | L | XL | 2XL |
| US | 4-6 | 6-8 | 8-10 | 12-14 | 16 | 18 |
| UK | 8-10 | 10-12 | 12-14 | 16-18 | 20 | 22 |
| Chest | 31.3-33.3 | 33.7-35.2 | 35.6-37.4 | 37.8-39.8 | 40.2-42.1 | 42.5-44.5 |
| Waist | 25-27 | 27.4-28.9 | 29.3-31.1 | 31.5-33.5 | 33.9-35.8 | 36.2-38.2 |
| Hip | 34.4-36.4 | 36.8-38.4 | 38.8-40.4 | 40.7-42.3 | 42.7-44.3 | 44.7-46.3 |
| Inleg length | 30.7 | 30.7 | 30.7 | 30.7 | 30.7 | 30.7 |
| SIZE | S | M | L | XL | 2XL |
| EU/DE/CH | 46-48 | 50 | 52-54 | 56 | 58-60 |
| Chest | 91-97 | 98-103 | 104-109 | 110-115 | 116-121 |
| Waist | 80.5-85.5 | 86.5-90.5 | 91.5-96 | 97-102 | 103-108 |
| Hip | 94.5-99.5 | 100.5-104.5 | 105.5-109.5 | 110.5-114.5 | 115.5-119.5 |
| Inleg length | 82.5 | 83 | 83.5 | 84 | 84.5 |
| SIZE | S | M | L | XL | 2XL |
| US/UK | 36-38 | 40 | 42-44 | 46 | 48-50 |
| Chest | 35.8-38.2 | 38.6-40.6 | 40.9-42.9 | 43.3-45.3 | 45.7-47.6 |
| Waist | 31.7-33.7 | 34-35.6 | 36-37.8 | 38.2-40.2 | 40.6-42.5 |
| Hip | 37.2-39.2 | 39.6-41.1 | 41.5-43.1 | 43.5-45.1 | 45.5-47 |
| Inleg length | 32.5 | 32.7 | 32.9 | 33.1 | 33.3 |
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Improved skin regeneration, improved sleep
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NATTCOLLAGEN™ Technology
NATTCOLLAGEN™ Technology
Skincare-inspired technology, built into the fabric. With marine collagen peptides permanently embedded into the fibre itself, NATTCOLLAGEN™ Technology helps create a breathable, moisture-balancing microclimate at skin level.
-
Collagen peptides and eucalyptus
Collagen peptides and eucalyptus
Night Renew combines botanic eucalyptus fibres with naturally derived collagen peptides. Together, they help regulate temperature and moisture, supporting more skin hydration overnight and all-night comfort.
-
Clinically tested and verified
Clinically tested and verified
NATTCOLLAGEN™ received the 5-star seal from Dermatest®, an independent dermatology testing institute in Münster, Germany.
This seal is only given for tests where excellent skin compatibility can be guaranteed and standards of clinical testing are met.
-
Improved skin regeneration, improved sleep
Wake up to smoother, more radiant skin — naturally. The Night Renew collection is designed to enhance your skin’s overnight regeneration while ensuring the ultimate comfort for restorative sleep:
• +40% skin hydration
• +12% smoother skin texture -
NATTCOLLAGEN™ Technology
Skincare-inspired technology, built into the fabric. With marine collagen peptides permanently embedded into the fibre itself, NATTCOLLAGEN™ Technology helps create a breathable, moisture-balancing microclimate at skin level.
-
Collagen peptides and eucalyptus
Night Renew combines botanic eucalyptus fibres with naturally derived collagen peptides. Together, they help regulate temperature and moisture, supporting more skin hydration overnight and all-night comfort.
-
Clinically tested and verified
NATTCOLLAGEN™ received the 5-star seal from Dermatest®, an independent dermatology testing institute in Münster, Germany.
This seal is only given for tests where excellent skin compatibility can be guaranteed and standards of clinical testing are met.
SLEEP IN IT, LOVE IT OR RETURN IT