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Children's Day in Japan (May 5th), originated from China's Dragon Boat Festival, is a day when families hang Koinobori (carp streamers) outside their homes.
Originally, Japanese samurai used banners to symbolize their identity. Later, due to the Chinese legend of "carp leaping over the dragon gate," these banners were changed to carp. In the legend, carp transform into dragons and ascend after leaping over a waterfall, symbolizing courage and success. This represents parents' hopes that their children will overcome difficulties and grow up healthy.
Thus, every Children's Day, colorful Koinobori flutter in the sky. Black or blue represents the father, red represents the mother, and green or other colors represent the children. When the Koinobori dance in the wind, it's like a parent's blessing, accompanying children to bravely pursue their dreams.
FLIPPOS Maze Cushioning Plus (MCP) Sock Insoles

May 5th each year marks Children's Day in Japan, a time when the sky is adorned with vibrant koinobori (carp streamers). Families hang these flags outside their homes, where they dance in the breeze, symbolizing the gentlest yet firmest blessings for their children.
This tradition originated from China's Dragon Boat Festival, and initially, Japanese samurai used flags to symbolize their status and honor. Later, inspired by the Chinese legend of "carp leaping over the Dragon Gate," they transformed the flags into carp. Each carp embodies courage and hope, and carries the parents' aspirations for their children, wishing them to bravely face challenges, grow strong, and pursue their dreams.
Black or blue koinobori symbolize the father's strength, red signifies the mother's care, while green and other vibrant colors represent the children's vitality and dreams. As the flags flutter in the wind, children look up, seemingly feeling their parents' encouragement and protection, motivating them to overcome life's "waterfalls" step by step and bravely shape their future.
#ReversibleSockDesign
The sock body features a deep blue base, reminiscent of traditional Japanese samurai colors, complemented by pink cherry blossoms and carp in the style of Japanese ukiyo-e art. Delicate lines and colors intertwine to create a dynamic scene, symbolizing resilience and courage on the path of challenges, and reminding you to stay focused and strong in adversity.
When the socks are reversed, Mount Fuji and a torii gate come into view. The snow-capped peak and the rising sun depict a journey of breaking through waves after battling against the current, as if witnessing new horizons and hope brought forth by effort and perseverance.

Reimagining Japanese cultural symbols in ukiyo-e style, carp swim leisurely amidst ripples scattered with cherry blossoms, while blue-gray and pink hues reflect an exclusive oriental palette.
When reversed, Mount Fuji and a sunrise scene are revealed. The vivid red sunlight paints the sky in a dreamy pink hue. The silhouette of a torii gate, symbolizing the entrance to the divine realm, conveys abundant blessings and good fortune.
The split-toe design offers enhanced comfort for runners wearing barefoot shoes or tabi socks.




If you still have any concerns, please feel free to contact us. Thank you. All measurements in the size chart below are taken when the socks are not stretched, and the compression level and elasticity of each pair of compression socks may vary slightly depending on its design.
If your calf circumference is wider, we recommend choosing one size up for a more comfortable and better-fitting wear.
| Sock Size | S | M | L |
| M | L | |||
| USA (Men’s Shoes) | 4 ~ 7 | 7 ~ 10 | 10.5 ~ 13 |
| USA (Women’s Shoes) | 5 ~ 8 | 8 ~ 11 | 11.5 ~14 |
| Suitable Foot Length (cm) | 22 ~ 26 | 25 ~ 27.5 | 28 ~ 31 |
| Sock Length (cm) | 31 | 32 | 34 |
| Cuff Width (cm) | 10.5 | 11.5 | |
| Calf Circumference (cm) | 34 ~ 36 | 37 ~ 40 | 40 ~ 43 |
| Fold-Down Height (cm) | 8 | ||
| Compression Level (mmHg) | Our compression level is approximately between 15–25 mmHg and may vary depending on the design of each pair. | ||
Taiwan Shipping Information
For home delivery service within Taiwan, orders over NT$2,000 qualify for free shipping to the main island. For remote areas and outlying islands, please opt for convenience store pickup.
7-11, FamilyMart, and Hi-Life all offer convenience store pickup and cash on delivery. Orders over NT$2,000 nationwide qualify for free shipping.
Hong Kong and Macau Shipping Information
For Hong Kong and Macau, shipping is handled by SF EXPRESS, with a flat rate of NT$250. Orders over NT$4,000 qualify for free shipping.
Asia Region International Shipping Information
For the Asia region (Asia, Southeast Asia, Oceania), shipping is handled by Chunghwa Post International Parcel. The flat rate is NT$700, and orders over NT$7,000 qualify for free shipping.
Europe and America Region International Shipping Information
For Europe and America (Europe, Middle East, Americas), shipping is handled by Chunghwa Post International Parcel. The flat rate is NT$900, and orders over NT$9,000 qualify for free shipping.
Note: International Custom Duties are not included in the shipping fee. International orders may be charged customs fees by the destination country's government and these are not included in FLIPPOS’s shipping fee.

