apanese Design | A4 Flat File Compatible | Water-Repellent | High-Grade Faux Leather | 6-Year Warranty
Give your child a stylish, sturdy, and uniquely designed school experience with the Coulomb Sonata Series School Bag, thoughtfully crafted in Japan for elementary school boys. Featuring Coulomb’s original camouflage pattern and contrast accents, this model combines modern Japanese aesthetics with premium functionality.
Built using high-grade artificial leather and pearl-finish fabric, this backpack stands out with a mature, boyish charm. Ideal for children who want something different from the typical randoseru, the Sonata Series represents Coolon’s latest design philosophy – a refined balance of personality, practicality, and durability.
Key Features:
🪖 Original Camouflage Design
Uses Coulomb’s exclusive camo fabric on the cover flap and front panel for a rugged, stylish appearance
Features subtle, lifelike “Durugi” design elements for added depth and individuality
💼 Spacious & A4-Compatible
Large internal capacity fits A4 flat files, books, and daily school essentials with ease
💧 Water-Repellent & Breathable Materials
Keeps contents dry in rain while maintaining airflow to reduce humidity inside
🧵 Expert Craftsmanship
Triple-stitched at high-stress points for long-lasting durability
Lightweight frame with high-strength PE box construction maintains shape without adding burden
🧴 Comfort & Hygiene
Back panel made with antibacterial, deodorizing, and highly breathable material
Designed to reduce sweat and heat build-up throughout the day
🔒 Convenient Details
One-touch automatic lock system for ease of use
Side hooks, front pocket, and printed D-ring designs enhance utility
Soft, ergonomic shoulder straps for a snug and comfortable fit
🎁 Bonus Items Included
Transparent backpack cover
Shoe bag
Luxurious gift packaging
🛡️ 6-Year Seller Warranty
Free replacement within 40 days for any quality issues
Reliable after-sales service throughout the school years
Product Details:
Brand: Coulomb (Coolon)
Series: Sonata Series
Design: Camouflage + Contrast Coloring
Material: Premium artificial leather & pearl fabric
Closure: One-touch automatic lock
Compatibility: A4 flat files
Weight: Lightweight construction
Includes: Transparent rain cover, shoe bag, gift box
Warranty: 6 Years (with 40-day replacement guarantee)
Recommended For: Boys in elementary school
