**Product Specifications:**
**Brand:** FOOTOPPO
**Material:** EVA
**Feature:** Arch support for flat feet
**Design Patent:**
- Patent Number: ZL202030734848.3
- Certificate Number: 6730412
- Design Patent Name: Slippers (01)
- Designers: Shuihong Shi, Sheng Zhang
- Patent Application Date: April 9, 2021
- Patentee Address: C4-25, No. 89, Shazhong Avenue, Baizhu District, Liuzhou City, Guangxi, 545005
- Authorization Announcement Date: July 23, 2021
**Quality Assurance:**
- Certified by MA, China National Accreditation Service for Conformity Assessment (CNAS)
- Testing in accordance with QB/T4552-2020 standards
- Results:
1. Formaldehyde Content: â¤75mg/kg (Compliant)
2. Decomposable Carcinogenic Azo Dyes: â¤30mg/kg (Compliant)
3. Abrasion Resistance: â¤15.0mm (Compliant)
4. Peel Strength: 25N/cm
5. Strap Pull-out Force: â¥80N (Compliant)
6. Odor: ⤠Grade 3 (Compliant)
**Design Features:**
- Scientifically designed high-elastic arch support
- Imported EVA material from Taiwan for comfort and durability
- Slip-resistant and massaging footbed
- Quick-drying and odor-resistant upper
**Product Name:** EVA Arch Support Sandals
**Color Options:** Purple, Black
**Sizes:** 37-38, 39-40, 42-43, 44-45
**Heel Height:** 2.5cm
**Suitable for:** Flat feet, X-legs, and foot eversion
**Usage:** Suitable for walking or standing to reduce foot fatigue and related symptoms
**Note:** The provided information is based on the details extracted from the text.