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BT21 NEW BASIC MANG SWEET DREAMS SLEEPING SOCKS
BT21 NEW BASIC MANG SWEET DREAMS SLEEPING SOCKS

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- This product is for adults and can be worn by those with a height of 230-270mm, but this may vary from person to person.
From Bedroom to Streets with BT21
BT21 SWEET DREAMS makes every moment stylish and comfy.




Brand Story


By embracing the core value of co-creation, BT21 actively engages with its global fanbase, incorporating their input to continually evolve and expand the unique BT21 UNIVERSE.
With 14 regional stores, BT21 delivers a unique customer experience through a wide range of products, both online and offline.
They extend beyond retail, encompassing animated series, brand partnerships, and mobile gaming.
Product Info

-
Weight:
Product size: 80*330*10 (mm) - Material: COTTON, POLYESTER
Notice
-
Hand washing is recommended in water temperature below 30℃.
Do not use chlorine bleach.
Do not twist too hard.
Do not use a dryer, but dry naturally in the shade.
When ironing, place a cloth on top at a low temperature.
Do not dry clean.
Due to the nature of the fabric, it may transfer color to other objects.
In particular, avoid continuous friction with bright colors (light-colored clothes, bags). -
This product is not a toy.
Be careful not to allow children, infants, or pets to suck or bite the product.
There is a risk of damage if this product is placed together with sharp products.
Do not disassemble the product arbitrarily or use it for any other purpose.
Avoid using or storing the product in places with high temperature and humidity.
Be careful not to get the product wet.
There is a risk of damage to the product if it is dropped from a high place or subjected to impact.
Use other than intended is prohibited.
We are not responsible for damage or defects caused by user negligence.
Seller information
Company Name | LINE FRIENDS SQUARE Co., Ltd. |
Business Registration Number | 545-87-03194 |
Online Sales Registration Number | 2024-Seoul Jung-gu-1776 |
CEO | Kyo Chul Koo |
Business Location | LINE FRIENDS SQUARE, 3F, 43 Myeongdong-gil, Jung-gu, Seoul |
Customer Center | 1544-5921 Operating hours: Mon-Fri 9am - 6pm / Lunch time 12pm - 1pm KST (Closed on Saturdays and public holidays) square_cs@linefriends.com |


BT21 shines even brighter when they come together with their unique personalities!
BT21's exciting and heartwarming journey towards their dreams goes on.
BRAND HOME
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BT21 KOYA BABY Premium K Edition Sitting Doll
BT21 SHOOKY BABY 프리미엄 K 에디션 시팅 인형
BT21 MANG BABY Premium K Edition Sitting Doll
BT21 COOKY BABY Premium K Edition Sitting Doll
BT21 CHIMMY BABY Premium K Edition Sitting Doll
BT21 RJ BABY Premium K Edition Sitting Doll
BT21 TATA BABY Premium K Edition Sitting Doll
BT21 KOYA Premium K Edition Embroidered Tessel Keyring
BT21 SHOOKY Premium K Edition Embroidered Tesla Keyring
BT21 MANG Premium K Edition Embroidered Tesla Keyring
BT21 COOKY Premium K Edition Embroidered Tessel Keyring
BT21 CHIMMY Premium K Edition Embroidered Tessel Keyring
BT21 RJ Premium K Edition Embroidered Tesla Keyring
BT21 TATA Premium K Edition Embroidered Tesla Keyring
BT21 KOYA Premium K Edition Mother-of-pearl Graphic Passport Case
BT21 SHOOKY Premium K Edition Mother-of-pearl Graphic Passport Case
BT21 MANG Premium K Edition Mother-of-pearl Graphic Passport Case
BT21 COOKY Premium K Edition Mother-of-pearl Graphic Passport Case
BT21 CHIMMY 프리미엄 K 에디션 자개 그래픽 여권 케이스
BT21 RJ Premium K Edition Mother-of-pearl Graphic Passport Case
BT21 TATA Premium K Edition Mother-of-pearl Graphic Passport Case
BT21 KOYA Premium K Edition Mother-of-pearl Graphic Mug (320ml)
BT21 SHOOKY Premium K Edition Mother-of-pearl Graphic Mug (320ml)
BT21 MANG Premium K Edition Mother-of-pearl Graphic Mug (320ml)
BT21 COOKY Premium K Edition Mother-of-pearl Graphic Mug (320ml)
BT21 CHIMMY Premium K Edition Mother-of-pearl Graphic Mug (320ml)
BT21 RJ Premium K Edition Mother-of-pearl Graphic Mug (320ml)
BT21 TATA Premium K Edition Mother-of-pearl Graphic Mug (320ml)
BT21 BASIC T-SHIRT UNIT ver.2
BT21 BASIC T-SHIRT UNIT ver.1
BT21 KOYA VINTAGE T-SHIRT
BT21 SHOOKY VINTAGE T-SHIRT
BT21 COOKY VINTAGE T-SHIRT
BT21 MANG VINTAGE T-SHIRT
BT21 CHIMMY VINTAGE T-SHIRT
BT21 RJ VINTAGE T-SHIRT
BT21 TATA VINTAGE T-SHIRT
BT21 KOYA BASIC T-SHIRT
BT21 SHOOKY BASIC T-SHIRT
BT21 COOKY BASIC T-SHIRT
BT21 MANG BASIC T-SHIRT
BT21 CHIMMY BASIC T-SHIRT
BT21 RJ BASIC T-SHIRT
BT21 TATA BASIC T-SHIRT
BT21 SOCKS CANDY GIFT SET (2PCS) BASIC
BT21 SOCKS LUCKY GIFT SET (2PCS) BASIC
BT21 SOCKS LOVE GIFT SET (2PCS) BASIC
BT21 KOYA LIP EMBROIDERY SOCKS BASIC
BT21 SHOOKY LIP EMBROIDERY SOCKS BASIC

- Reviews
- Questions
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Calientitas y hermosas
Hermosísimas y súper calientitas, la tela es bonita las caritas están súper bien hechas y quedan por delante, son muy lindas

Cute, But Run Small
These are very cute and look like the picture, but for adult socks, they run really small. Wouldn't recommend for people with bigger than probably a six or seven max US size.

Product information notice
- Product name/model name
- BT21 NEW BASIC MANG Sweet Dream Sleeping Socks
- Product size
- 80*330*10 (mm)
- Texture
- COTTON, POLYESTER
- Certification Permissions
- None
- Country of manufacture/country of origin
- china
- Manufacturer/Importer
- Icons Co., Ltd.
- Manufacturer/A/S person in charge and phone number
- Line Friends Square Customer Center
Operating hours: Monday-Friday 9:00 AM - 6:00 PM / Lunch time 12:00 PM - 1:00 PM KST
Sun-Fri 16:00 pm - 1:00 am(+1) PST
Phone number: 1544-5921
Email: square_cs@linefriends.com
Channel Talk: linefriendssquare.channel.io - Precautions
- • Due to the nature of the fabric, it may transfer color to other items.
Avoid continuous friction, especially with bright colors (light-colored clothes, bags).
• Hand wash with neutral detergent in cold water below 30℃.
• Do not use bleach such as Lux.
• This product is not a toy.
• Be careful not to let children, infants or pets put the product in their mouths.
• There is a risk of damage if this product is placed together with sharp products.
• Do not disassemble the product or use it for other purposes.
• Avoid using or storing the product in hot and humid places.
• Be careful not to get the product wet.
• There is a risk of damage to the product if it is dropped from a high place or subjected to impact.
• Use for any purpose other than intended use is prohibited.
• We are not responsible for damage or defects caused by user negligence. - Package size
- 120*220 (mm)
- Things to check before purchasing
- • Depending on the monitor resolution, there may be a slight color difference from what you see on the screen.
• There may be a difference of 1~2cm in size depending on the measuring standard.
• When exchanging or refunding, the product must be returned without missing components.
• In accordance with the Act on Consumer Protection in Electronic Commerce, etc., when a minor purchases a product, the minor or the legal representative may cancel the purchase if the legal representative does not consent.
• Props used on the detail page other than the components are for presentation purposes only and may not be sold separately.
Shipping Information
- [International Shipping Provider / Shipping Fee]
- · Shipping Provider: DHL
- · Shipping Fee: Varies based on the destination country and the size/weight of the order.
- · Shipping Restrictions: Certain countries/regions may not be eligible for delivery. (e.g., conflict zones, countries with low duty-free thresholds, or regions with complex logistics.)
- [Shipping Regions]
- • Africa : Algeria, Angola, Benin, Botswana, Burkina Faso, Burundi, Cape Verde, Chad, Comoros, Congo-Brazzaville, Côte d’Ivoire, Djibouti, Egypt, Equatorial Guinea, Eswatini, Ethiopia, Gabon, Gambia, Ghana, Guinea, Guinea-Bissau, Kenya, Lesotho, Liberia, Madagascar, Malawi, Mauritania, Mauritius, Mayotte, Morocco, Mozambique, Namibia, Nigeria, Cameroon, Réunion, Rwanda, São Tomé&Príncipe, Senegal, Seychelles, Sierra Leone, South Africa, Tanzania, Togo, Tunisia, Uganda, Zambia, Zimbabwe
- • Asia : Armenia, Azerbaijan, Bahrain, Bangladesh, Bhutan, Brunei, Cambodia, China, Cyprus, Georgia, Hong Kong SAR, India, Indonesia, Israel, Japan, Jordan, Kazakhstan, Kuwait, Kyrgyzstan, Laos, Lebanon, Macao SAR, Malaysia, Maldives, Mongolia, Nepal, Oman, Pakistan, Philippines, Qatar, Saudi Arabia, Singapore, Sri Lanka, Taiwan, Thailand, Timor-Leste, Turkey, Turkmenistan, United Arab Emirates, Uzbekistan, Vietnam
- • Europe :Albania, Andorra, Austria, Belgium, Bosnia & Herzegovina, Bulgaria, Croatia, Czechia, Denmark, Estonia, Faroe Islands, Finland, France, Germany, Gibraltar, Greece, Guernsey, Vatican City, Hungary, Iceland, Ireland, Isle of Man ,Italy, Jersey, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Moldova, Monaco, Montenegro, Netherlands, North Macedonia, Norway, Poland, Portugal, Romania,St. Helena, San Marino, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, United Kingdom.
- • North America : Anguilla, Antigua & Barbuda, Aruba, Bahamas, Barbados, Belize, Bermuda, Canada, Cayman Islands, Costa Rica, Curaçao, Dominica, Dominican Republic, El Salvador, Greenland, Grenada, Guadeloupe, Guatemala, Haiti, Honduras, Jamaica, Martinique, Mexico, Montserrat, Nicaragua, Panama, St. Barthélemy, St. Kitts&Nevis, Sint Maarten, United States, British Virgin Islands
- • South America : Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Falkland Islands, French Guiana, Guyana, Paraguay, Peru, St. Lucia, St. Martin, St. Vincent&Grenadines, Suriname, Trinidad & Tobago, Turks & Caicos Islands, Uruguay, Venezuela
- • Oceania : Australia, Cook Islands, Fiji, French Polynesia, Kiribati, Nauru, New Caledonia, New Zealand, Niue, Papua New Guinea, Samoa, Solomon Islands, Tonga, Tuvalu, Vanuatu, Wallis & Futuna
Return Notice
- [Exchange/Return Shipping Fee]
- Exchange shipping fee: round trip 6,000 won
Return shipping fee: round trip 6,000 won / one way 3,000 won
If the specifications are exceeded, additional shipping charges may apply.
For exchanges/returns due to product defects or delivery errors, we will cover the shipping costs. - [How to apply for exchange/return]
- Please contact us through Channel Talk or Customer Center at the bottom of the site.
- [Exchange/Return Period]
- Exchange/return is possible within 7 days from the date of receipt of the product. (If the exchange product is out of stock, it will be returned)
However, if the product is different from the advertised content or is defective or performed differently from the contract, exchange/return is possible within 3 months from the date of receipt of the product and 30 days from the day the fact was recognized or could have been known. - [If exchange/return is possible]
- If the exchange/return request is made within 7 days from the date of receipt of the product due to the customer's simple change of mind
If the delivered product is different from the information provided in the order history and product page
If the delivered product is broken/damaged or heavily contaminated - [If exchange/return is not possible]
- If 7 days have passed since the date of receipt of the product when requesting an exchange/return due to the customer's simple change of mind
If the product is damaged or damaged due to customer carelessness
If the value of the product, etc. has decreased significantly due to use or consumption
If the value of the product has decreased significantly over time to the extent that resale is difficult
In the case of products such as food, stationery, toys, small home appliances, etc. whose product value is damaged when the package is opened
If the returned product is missing components (home appliance accessories, free gifts, etc.)
Other cases that fall under restrictions on consumer subscription withdrawal as prescribed by the Act on Consumer Protection in Electronic Commerce, etc.
Seller information
Company Name | LINE FRIENDS SQUARE Co., Ltd. |
Business Registration Number | 545-87-03194 |
Online Sales Registration Number | 2024-Seoul Jung-gu-1776 |
CEO | Kyo Chul Koo |
Business Location | LINE FRIENDS SQUARE, 3F, 43 Myeongdong-gil, Jung-gu, Seoul |
Customer Center | 1544-5921 Operating hours: Mon-Fri 9am - 6pm / Lunch time 12pm - 1pm KST (Closed on Saturdays and public holidays) square_cs@linefriends.com |