KALA·Y Large Capacity Five-Dimensional Load-Reducing Spine Protection Backpack for Middle and High

Product Specifications

Brand: KALA·Y

Product Name: KALA·Y Anti-Sagging Load-Reducing Accordion Backpack (Shiguang Series)

Recommended Height & Size:

Stage 3 (Rapid Growth Period): Height 150-175 cm, Capacity 26.2L, Dimensions 290mm (W) x 430mm (H) x 210mm (D), Recommended for middle and high school students

Stage 4 (Mature Period): Height 165 cm and above, Capacity 30.2L, Dimensions 305mm (W) x 450mm (H) x 220mm (D), Recommended for middle school to university students

Additional sizes: Small size for height ~158 cm, Large size for height ~182 cm

Weight: Net weight varies slightly by batch; manual measurement tolerance ±1-2 cm

Material:

A-grade fabric compliant with GB/T 26158-2010 "Chinese Minor Human Body Dimension Standard"

Phthalate-free, formaldehyde-free, no detectable harmful aromatic amines or heavy metals

Double antibacterial lining with 99% inhibition rate against Staphylococcus aureus and Escherichia coli

Design Features:

Accordion-style expandable structure for easy compression and storage

Large capacity suitable for 15.6-inch laptops, iPads, wallets, water bottles, umbrellas

Multiple compartments: main large compartment, front upper pocket for small items, inner pocket for books with rear-centered weight distribution, front zipper pocket, front lower pocket for extra storage, elastic side pockets for water bottles and umbrellas

H-shaped shock-absorbing load reduction system with 250g sandwich padding and 2.5cm high-elastic memory foam for enhanced comfort and anti-sagging

Ergonomic U-shaped shoulder straps with widened contact area and vest-style neck fit

Adjustable chest strap for height adaptability

Rainbow webbing and anti-slip buckle to fix backpack position under 40kg load without shifting

Balanced left-right force distribution to prevent sagging

Safety & Quality:

Meets "General Safety Requirements for Student Supplies"

Eleven safety tests passed including no detection of phthalates, formaldehyde, carcinogenic aromatic amines, and heavy metals

Antibacterial lining tested and certified (Test Report No. 250242400)

Colors Available:

Ivory White

Lavender Purple

Legendary Blue

Piano Black

Model Height Examples:

Small size: 158 cm, 164 cm

Large size: 165 cm, 182 cm

Product Codes:

Small size: CX5573

Large size: CX5573L

Warranty & Service:

2-year quality guarantee

30-day return and exchange policy

Manufactured by KALA·Y Group, Jiangsu Factory (30 years of manufacturing experience)

Note: All dimensions are manually measured; a deviation of 1-2 cm is within reasonable range. Net weight may vary slightly by production batch.