Size 1
Size 2
Size 3
Size 4
Size 4+
Size 5
Size 5+
Size 6
Size 7
Diapers
4.8/5 star customer rating
Hello World diapers are built for babies who never stop moving. All-round protection, feather-soft materials and a stretchy fit that adapts from the first roll to the first step. Day and night.
Super-soft, breathable materials
Flexible fit
Up to 12 hours of protection
1
2 - 5kg
2
4 - 8kg
3
6 - 10kg
4
9 - 14kg
4+
10 - 15kg
5
11 - 16kg
5+
12 - 17kg
6
13 - 18kg
7
15+ kg
Size guide
Size 1: 2–5 kg - Newborns
Size 2: 4–8 kg - First weeks
Size 3: 6–10 kg - Rolling & reaching
Size 4: 9–14 kg - Active explorers
Size 4+: 10–15 kg - Even more movement
Size 5: 11–16 kg - Toddlers on the go
Size 5+: 12–17 kg - Growing fast
Size 6: 13–18 kg - Little adventurers
Size 7: 15+ kg - Big kids
Discover our innovations
No more blowouts
Designed to contain every mess, front, back and all around. Our 360° protection™ and Pee&Poo Pouch™ seal it all in.
Up to 12 hours dryness
Absorbs moisture in seconds and keeps skin dry for up to 12 hours. Powered by Magical Tubes™ and 4-layer Flash Dry™.
Moves with every wiggle
Stretches and adapts to your baby's every move, so they stay comfortable and protected all day long.
Feather soft
Incredibly gentle on your baby's delicate skin, inside and out. Zen Soft™ makes every change feel like the softest touch.
Gentle on delicate skin
Dermatologically tested and free of harmful substances, safe on even the most sensitive skin.
Features
360° All-round protection™ with Pee&Poo Pouch™
Flash Dry™ technology & Magical Tubes™
Breathable Stretch Ears™
Zen Soft™ softness
Deep Sleep™ comfort
Wetness indicator & disposal tape
Certifications
Skin safety
Dermatest® Very Good for sensitive skin, OEKO-TEX® 100, Asthma Allergy Nordic, Skin Health Alliance, Allergy Certified.
Midwives recommendation
Size 1-2 (95%), Size 3+ (93%) by Hebammentest.de.
Sustainability
Blauer Engel, FSC, EcoVadis Platinum Top 1%.
Diapers
4.8/5 star customer rating
Hello World diapers are built for babies who never stop moving. All-round protection, feather-soft materials and a stretchy fit that adapts from the first roll to the first step. Day and night.
Super-soft, breathable materials
Flexible fit
Up to 12 hours of protection
Size 1
Size 2
Size 3
Size 4
Size 4+
Size 5
Size 5+
Size 6
Size 7
1
2 - 5kg
2
4 - 8kg
3
6 - 10kg
4
9 - 14kg
4+
10 - 15kg
5
11 - 16kg
5+
12 - 17kg
6
13 - 18kg
7
15+ kg
Size guide
Size 1: 2–5 kg - Newborns
Size 2: 4–8 kg - First weeks
Size 3: 6–10 kg - Rolling & reaching
Size 4: 9–14 kg - Active explorers
Size 4+: 10–15 kg - Even more movement
Size 5: 11–16 kg - Toddlers on the go
Size 5+: 12–17 kg - Growing fast
Size 6: 13–18 kg - Little adventurers
Size 7: 15+ kg - Big kids
Discover our innovations
No more blowouts
Designed to contain every mess, front, back and all around. Our 360° protection™ and Pee&Poo Pouch™ seal it all in.
Up to 12 hours dryness
Absorbs moisture in seconds and keeps skin dry for up to 12 hours. Powered by Magical Tubes™ and 4-layer Flash Dry™.
Moves with every wiggle
Stretches and adapts to your baby's every move, so they stay comfortable and protected all day long.
Feather soft
Incredibly gentle on your baby's delicate skin, inside and out. Zen Soft™ makes every change feel like the softest touch.
Gentle on delicate skin
Dermatologically tested and free of harmful substances, safe on even the most sensitive skin.
Features
360° All-round protection™ with Pee&Poo Pouch™
Flash Dry™ technology & Magical Tubes™
Breathable Stretch Ears™
Zen Soft™ softness
Deep Sleep™ comfort
Wetness indicator & disposal tape
Certifications
Skin safety
Dermatest® Very Good for sensitive skin, OEKO-TEX® 100, Asthma Allergy Nordic, Skin Health Alliance, Allergy Certified.
Midwives recommendation
Size 1-2 (95%), Size 3+ (93%) by Hebammentest.de.
Sustainability
Blauer Engel, FSC, EcoVadis Platinum Top 1%.
Diapers
4.8/5 star customer rating
Hello World diapers are built for babies who never stop moving. All-round protection, feather-soft materials and a stretchy fit that adapts from the first roll to the first step. Day and night.
Super-soft, breathable materials
Flexible fit
Up to 12 hours of protection
Size 1
Size 2
Size 3
Size 4
Size 4+
Size 5
Size 5+
Size 6
Size 7
1
2 - 5kg
2
4 - 8kg
3
6 - 10kg
4
9 - 14kg
4+
10 - 15kg
5
11 - 16kg
5+
12 - 17kg
6
13 - 18kg
7
15+ kg
Size guide
Size 1: 2–5 kg - Newborns
Size 2: 4–8 kg - First weeks
Size 3: 6–10 kg - Rolling & reaching
Size 4: 9–14 kg - Active explorers
Size 4+: 10–15 kg - Even more movement
Size 5: 11–16 kg - Toddlers on the go
Size 5+: 12–17 kg - Growing fast
Size 6: 13–18 kg - Little adventurers
Size 7: 15+ kg - Big kids
Discover our innovations
No more blowouts
Designed to contain every mess, front, back and all around. Our 360° protection™ and Pee&Poo Pouch™ seal it all in.
Up to 12 hours dryness
Absorbs moisture in seconds and keeps skin dry for up to 12 hours. Powered by Magical Tubes™ and 4-layer Flash Dry™.
Moves with every wiggle
Stretches and adapts to your baby's every move, so they stay comfortable and protected all day long.
Feather soft
Incredibly gentle on your baby's delicate skin, inside and out. Zen Soft™ makes every change feel like the softest touch.
Gentle on delicate skin
Dermatologically tested and free of harmful substances, safe on even the most sensitive skin.
Features
360° All-round protection™ with Pee&Poo Pouch™
Flash Dry™ technology & Magical Tubes™
Breathable Stretch Ears™
Zen Soft™ softness
Deep Sleep™ comfort
Wetness indicator & disposal tape
Certifications
Skin safety
Dermatest® Very Good for sensitive skin, OEKO-TEX® 100, Asthma Allergy Nordic, Skin Health Alliance, Allergy Certified.
Midwives recommendation
Size 1-2 (95%), Size 3+ (93%) by Hebammentest.de.
Sustainability
Blauer Engel, FSC, EcoVadis Platinum Top 1%.
Try the freedom diaper now
Try the freedom diaper now
© 2026 Hello World. All rights reserved.
© 2026 Hello World. All rights reserved.
© 2026 Hello World. All rights reserved.
© 2026 Hello World. All rights reserved.
★★★★★
4.8/5 star customer rating
Recommended by 96% of midwives
★★★★★
4.8/5 star customer rating
Recommended by 96% of midwives
★★★★★
4.8/5 star customer rating
Recommended by 96% of midwives