**Product Specifications:**
Brand: KOOLIFE
Model: StruggleWin, vivoS18 series
Material: Matte finish shell
Features: Ultra-thin design, original machine matte finish, fingerprint-resistant
Upgrades: 4 major upgrades, high-quality protection, soft edges, scratch-resistant
Compatibility: Compatible with both new and old models
Design: Lightweight and slim, seamless fit, enhanced protection for camera and screen
Protection: Full coverage for camera and screen, raised edges for added protection
Technology: Anti-fingerprint layer, matte finish technology
Functionality: Precise cutouts, comfortable button access, scratch-free installation and removal
Additional Features: 360-degree airbag protection, shock-absorbing corners, silent buttons
Disclaimer: Product specifications are based on laboratory testing and may vary slightly in different environments
Please note that the above information is for reference only.