**Product Specifications**
**Brand:** Sunrimoon
**Class:** First Class
**Technology:** 3D-Grid Elastic Matrix System
**Design:** D, Wing-shaped design with 3D curved surface cross-support design
**Protection Principle:** 3D-GRID technology provides direct impact protection, side angle impact protection, and multi-point impact protection
**Cushioning:** 3D-GRID system utilizes a dense soft support structure to effectively reduce collision impact energy in multiple dimensions
**Ventilation:** 3D-GRID technology offers good cushioning effect with high breathability up to 82%
**Regulation System:** RTMOON F1 Integrated Regulation System for four-dimensional adjustment
**Advanced Features:** Quick disassembly, over 90° rotating space magnetic buckle, trapezoidal strap buckle for quick length adjustment
**Material:** Imported EPS raw material for integrated molding with edge-wrapped shell
**Safety:** LED safety taillight hole for universal bike taillight insertion
**Lining:** Ionic+ silver ion lining for antibacterial and odor-resistant properties
**Chin Pad:** Surrounding chin pad with soft and fitting Ionic+ antibacterial and odor-resistant fabric
**Colors:** Exquisite Black, Snow Crystal White, Starry Gray, Rainbow, Peach Blossom Pink, Warm Wood Brown, Sandalwood Pink
**Sizes:** M 54-57cm (230g), L 57-61cm (255g), XXL 62-65cm (290g)
**Configuration & Specifications:**
- Ionic+ technology silver ion antibacterial and odor-resistant lining
- POM-Adjustable system
- PA-Polyamide strap fabric
- GB China certification
- Integrated molding technology
- Environmentally friendly PC shell with imported EPS foam inner shell
**Dimensions:**
- Head Circumference (cm): 54-57 (M), 58-61 (L), 62-65 (XXL)
- Head Width (cm): 17.6 (M), 18.6 (L), 19.5 (XXL)
**Measurement Method:**
- Head Circumference: Measure with a soft tape around the forehead, above the eyebrows and the highest point at the back of the head, take the average of two measurements for accurate sizing
- Head Width: Measure the widest distance between the ears with a ruler
