**Product Specifications:**
**Brand:** Beckmann
**Height-based Spinal Protection:** Designed to fit the back more closely based on height categories for children: Small Children, Big Children, Classic 22L, Classic 28L
**Height Categories:** 100-135CM, 135-155CM
**Grade Categories:** 1-3 Grade, 3-6 Grade
**Features:**
- AGIFTFROMNORWAY: A gift from the Kingdom of Norway
- Spinal Protection: Developed in 1978, endorsed by various international associations and awarded for ergonomics and innovation
- Material: TPR wear-resistant foot pad, high elasticity and durability, durable buckles, can withstand pulling force of 30-40KG
**Spinal Protection System:**
- 4.0: Anti-gravity carrying system
- 3.0: Sponge support
- 2.0: Back plate support
- 1.0: No support
- Aluminum Frame Support: Flexible aluminum frame support, surrounding back design, even weight distribution, shock absorption, and deformation resistance
**Aluminum Frame:**
- Biomorphic Design: S-shaped aluminum frame inspired by mountaineering backpacks, lightweight, strong, and durable
- Lightweight Aluminum Bars: S-shaped curvature to reduce the weight of the backpack structure
**Floating Wing Waist Support:**
- Three-zone floating wing waist support for comfortable and shock-absorbing weight distribution
**Detail-oriented Design:**
- Hidden zipper design for a clean and aesthetic appearance
**Certifications:**
- Endorsed by various international associations for spinal health and ergonomics
**Quality Assurance:**
- Royal-approved quality, chosen by millions of families worldwide
(Note: The specifications have been summarized and organized based on the provided information.)
