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NATTCOLLAGEN™ SLEEP TECH

Long sleeve

CHF 129.90

~~CHF 0.00~~ CHF 129.90

CHF 0.35 a night

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beauty sleep. clinically proven.

+40% skin hydration in 4 weeks

healthier & more radiant skin

Color: Noirberry

Size

S M L XL 2XL

beauty sleep. clinically proven.

+40% skin hydration in 4 weeks

healthier & more radiant skin

A soft, breathable long-sleeve top infused with collagen fibres that support skin moisture and deliver lasting comfort through the night.

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

Testing institutes: EMPA | Testex | Dermatest

Product 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

Innovation you can feel, sustainability you can trust. Night Renew blends botanic fibres with NATTCOLLAGEN™ Technology to embed marine collagen peptides inside the fibre itself. Unlike surface-applied finishes that may diminish with wear and washing, the collagen is locked into the yarn’s polymer structure before knitting. 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:

Semi-fitted
Chest width (M): 100 cm (39.4″) +/- 6 cm (2.4″) per size
Body length (M): 73 cm (28.7"") +/- 1 cm (0.4″) per size

Model information:

Julian is 190cm (6’ 3”) and wears size M

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 CHF.

Free gift packaging for all orders above 80 CHF, simply select "Dagsmejan premium box" at checkout.

View full details

Improved skin regeneration, improved sleep

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
Read more benefits
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.
Read more technology
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.
Read more about collagen and eucalyptus
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.
More about the testing

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
Read more benefits
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.
Read more technology
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.
Read more about collagen and eucalyptus
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.
More about the testing

SLEEP IN IT, LOVE IT OR RETURN IT

Sleep in your Dagsmejan sleepwear for up to 2 weeks, if you don’t love it you can return it for a full refund.

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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Wear it with

Long sleeve

Long sleeve

The sleep benefits

Product details & care

Natural & sustainable

Fit & size

Free returns & comfort guarantee

SLEEP IN IT, LOVE IT OR RETURN IT

Beautifully wrapped

Extended returns

14-day sleep trial

30'000+ reviews