The Columbia Castle Rock 15 backpack features a lightweight design with mesh pockets. Back measurements: Height: 41 cm Width at the bottom: approximately 24 cm Used only once ■ Castle Rock Series [Features] - Columbia's original water-repellent function "Omni-Shield" - Columbia's classic backpack, ideal for hiking - Form that fits women well - High-strength nylon material - Main compartment: Internal open pocket - Second compartment: Internal hook-and-loop fastener pocket and tape loops - Breathable back structure with a ventilation channel in the center - Zipper pull cords with reflectors for increased visibility at night - Rain cover with a wind-resistant strap - Capacity: 15L (approximate) - Brand: Columbia - Model Name: Castle Rock 15 - Color: Black/Blue/Red - Features: With mesh pockets Thank you for looking.