Peak Design

Peak Design BARF-45-BK-1 45L Backpack Rain Cover - Black

Unwavering Protection from the ElementsIntroducing the Peak Design Rain Fly 45L, your ultimate defense against severe weather. This ultra-packable, waterproof cover shields your backpack from rain, snow, and other harsh conditions. The adjustable cinch ensures a snug fit, while the durable, susta...

$29.95*
In Stock on Amazon.com
View on Amazon

*Price sourced from Amazon.com. Last updated:Jun 20, 2026.Price and availability are subject to change.

Affiliate Disclosure: Studio Supplies may earn a commission from qualifying purchases made through links on this page, at no additional cost to you. This helps support our editorial team.

Notice a mistake? Let Us Know

Overview

Unwavering Protection from the Elements

Introducing the Peak Design Rain Fly 45L, your ultimate defense against severe weather. This ultra-packable, waterproof cover shields your backpack from rain, snow, and other harsh conditions. The adjustable cinch ensures a snug fit, while the durable, sustainable design aligns with Peak Design's commitment to quality and environmental responsibility.

  • Brand: Peak Design
  • Model: BARF-45-BK-1
  • Compatibility: 45L Backpacks
  • Material: Waterproof Terra Shell 50D recycled 2x6 twin rip nylon with 2,000mm hydrostatic coating
  • Features: Fully taped seams, cinchable elastic perimeter cord, laser-cut drainage holes, stuffable mesh pouch
  • Dimensions (Packed): 18.5cm x 15cm
  • Dimensions (Deployed): 66cm x 25cm x 18cm
  • Weight: 91.7g (0.2 lbs)

Key Features

OUTDOOR RAIN FLY: Built for downpours and rugged conditions, the Outdoor Rain Fly is a waterproof backpack rain cover designed to protect your gear from rain, snow, and the unexpected, wherever the trail takes you.

FULL COVERAGE, WEATHERPROOF DESIGN: Made from 100% recycled Terra Shell 50D ripstop nylon with a 2,000mm hydrostatic coating and fully taped seams, this rain fly keeps water out even in extreme conditions.

SECURE FIT AND DRAINAGE: A cinchable elastic cord ensures a snug fit over your hiking backpack. Laser-cut drainage holes at the bottom release trapped moisture, preventing pooling inside the backpack cover.

PACKABLE AND VERSATILE: Stuffs down into a breathable mesh pouch with zipper closure and hanging loop for quick drying. Ideal for air travel or wet treks. Available in two sizes: fits 25-30L or 45L backpacks.

RADICAL PRODUCTS, RADICAL COMPANY: Peak Design creates industry-shifting, lifetime-lasting gear with a mission to leave the world better than we found it. No investors, no venture capital – just innovation on our terms.

Specifications

Material
100% recycled Terra Shell 50D ripstop nylon
Waterproofing
2,000mm hydrostatic coating, fully taped seams
Features
Cinchable elastic cord, laser-cut drainage holes
Packability
Stuffs into breathable mesh pouch with zipper closure and hanging loop
Size Compatibility
Fits 25-30L or 45L backpacks
Color
Black

Pros & Cons

👍 Pros

  • Constructed from 100% recycled Terra Shell 50D ripstop nylon with a 2,000mm hydrostatic coating for robust waterproofing.
  • Features fully taped seams to prevent water ingress, ensuring reliable protection against rain and snow in extreme conditions.
  • Designed with laser-cut drainage holes at the bottom to release trapped moisture, preventing water pooling inside the cover.
  • Includes a cinchable elastic cord, allowing for a secure and snug fit over either 25-30L or 45L backpacks.
  • Stuffs down into a breathable mesh pouch with zipper closure and hanging loop, offering convenient portability and quick drying.

👎 Cons

  • While versatile for two sizes, it might not provide a perfectly custom fit for every backpack within the 25-30L or 45L range.
  • The specific weight of the rain cover itself is not provided, which could be a factor for ultralight hikers.
  • The rain fly is designed for downpours and rugged conditions, but exact temperature resistance or UV protection is not detailed.
  • The included mesh pouch for packing down might not be fully waterproof if exposed to direct rain when removed from the backpack.
  • Details regarding the type of zipper on the mesh pouch (e.g., YKK, water-resistant) are not specified.

Frequently Asked Questions

The Peak Design Backpack Rain Cover is crafted from 100% recycled Terra Shell 50D ripstop nylon, emphasizing both durability and environmental responsibility.
It ensures dryness with a 2,000mm hydrostatic coating and fully taped seams, creating a weatherproof design that keeps water out even in downpours.
Yes, it is versatile and available in two sizes, designed to fit either 25-30L or 45L backpacks, and features a cinchable elastic cord for a snug fit.
The rain cover includes laser-cut drainage holes at the bottom specifically to release any trapped moisture, effectively preventing water from pooling inside the backpack cover.
The rain cover conveniently stuffs down into a breathable mesh pouch with a zipper closure and a hanging loop, making it packable for quick drying and storage.
Yes, the Outdoor Rain Fly is built for downpours and rugged conditions, designed to protect your gear from rain, snow, and unexpected elements.