Sierra Designs Flex Trail 40-60L Expandable Volume Ultralight Backpack

Big adventures made lighter

Explore like a pro no matter your experience level. The Flex Trail ultralight backpack gives you the ability to tailor the pack size to your adventure needs by taking advantage of the horizontal gussets. Cinch it down to a 40L cargo pack capacity for your shorter trips. Expand it out to 60L for your longer backpacking adventures. Continue to customize your backpack with the hardware-based adjustable torso. Keep your essentials close at hand with oversized mesh pockets and zippered hip pockets. The aluminum perimeter frame suspension keeps this backpacking pack lightweight while the support stays strong.

Features:

• Expandable volume to adjust to both short and longer backpacking adventures
• Lightweight aluminum perimeter frame for increased stability
• Customizable fit with a hardware based adjustable torso
• Large front stretch mesh Shove-It pocket to easily store jackets and other day essentials
• Zippered hip belt pockets and 2 stretch mesh side pockets for storing water bottles and items you need to keep on hand
• U-shaped access to top zipper and zip stash pocket in lid to store items for easy access
• Ultralight backpacking backpack

Materials:

• 150D Polyester Ripstop / 420D Polyester

Specifications:

• Capacity: 39-56L / 2380-3417 in3
• Weight: 2 lbs 12 oz / 1.23 kg
• Optimal Carry Weight: 15-45 lbs / 7-20 kg
• Torso Fit: 15.5" - 21" / 39 - 53 cm
• Waist Belt Size: 31" - 54" / 31 - 54 cm
• Dimensions (H x W x D): 27.5" x 10.5" x 14" / 70 x 27 x 35 cm
• No. of Hip Belt Pockets: 2
• No. of Exterior Pockets: 5

Our Mission

We believe in creating equipment that empowers people to get outdoors with products that are accessible, thoughtful and beautiful.

Born in California and Bred on the Trail.

Bob Swanson and George Marks founded Sierra Designs in 1965 on the premise that all people deserve to have good gear for exploring the outdoors regardless of their background or experience level. That meant creating products that were trail tested, inspired by any adventure and trouble-free.

While some things have changed in the last 50 years, our mission hasn't. Today Sierra Designs continues to be a place where you can find happy dogs, new ideas, and always reliable camping gear. We find inspiration in mountains, deserts, and beaches. We find inspiration in the every day outside our office and the trails headed straight into the heart of the Rocky Mountains. We find inspiration in any adventure, big or small. We are people who Think Outside, because happiness is found in the adventure.