The Drifter 4.0 Series

35L Drifter HD 4.0

$ 250.00 USD

– Sold Out

Notify me when the next version of this product is released:


Convertible. Modular. Carryon Approved.

The Drifter 4.0 Series of carryon travel backpacks is the culmination of 10 years of continuous improvement resulting from the combination of rigorous team testing & extensive customer feedback.

The 35L Drifter HD 4.0 is our heavy duty model, an extremely rugged travel backpack reinforced with hypalon rubber for extra strength and designed to maximize budget airlines’ smaller overhead compartment while also fitting below every airline seat*. 

The bag quickly converts from “backpack mode” to “duffle/carryon mode” with the roll top designed to unroll and cover up the shoulder straps, resulting in a more manageable experience when traveling with multiple bags, such as a personal item backpack (28L Ambassador 2.0 or 25L Drifter Mini 4.0) and/or checked gear bags (surfboard, snowboard, golf, etc.).

The 35L Drifter HD 4.0 is our top of the line convertible carryon backpack and comes included with 11 modular components:

4x removable premium compression straps, 2x removable padded handles, 1x removable messenger strap, 1x removable chest strap, 1x removable waist strap set, 1x removable waterproof rain cover & 1x removable velcro divider

Maximize your carryon allowance and skip the checked luggage carousel with SOVRN Republic travel backpacks.


New 4.0 Features:

Genuine Leather Front Panel

210D Ripstop Nylon Interior Lining

  • Water-Resistant Coating
  • Seamless Repeating Map Pattern Print

2-Way USB Pass-through With Weather Cover + USB Extension Cables 

  • USB-C [Input + Output] & USB-A [Output] 
  • Supports Simultaneous Dual Output

Dual Full Perimeter Access To Main Compartment (Side + Rear Access)

Dual Access Suspended Laptop Compartment (Side + Top Access)

2x Exterior Soft Velcro Patches For Personalized Patch Application

Quadruple Reinforced Top & Side Handles

  • Hypalon + Reinforcement Nails + Double Webbing Reinforced By Bartack Stitching

Double Reinforced Suitcase Handle Passthrough

Rubber Cable Passthrough

Updated Anchor Point Locations


Features Continued:

International Carryon Approved (Personal Item* & Overhead Size)

Convertible Design - Roll Top Covers Shoulder Straps

Modular Design - Removable Handles & Straps

YKK® #8RC & #5RC Luggage Zippers (Lifetime YKK® Zipper Guarantee)

17x Total Zippered Compartments 

  • 9x Interior Zippered Stretch Mesh Organizational Compartments
  • 3x Lockable Exterior Main Compartment Zipper Pairs

Composite Assembly - Combination of Premium Materials

12oz High Density Canvas With Heavy Beeswaxed Coating

1050D Ballistic Nylon (Shoulder Straps, Bottom & Back Panels)

46x Anchor Points (33x Hypalon + 13x Seat Belt Webbing)

  • 37x Exterior + 9x Interior Anchor Points

2x Suitcase Handle Passthroughs (Both Orientations)

Hidden Lumbar Passport Compartment

Roll Top Anchor Strap System (Trimmers® Anodized Aluminum Tension Hook)

Combination of Duraflex®, Trimmers® YKK® Premium Hardware

Keyring Management System

10" Stretch Mesh Exterior Canteen Pocket

Heavily Padded Shoulder Straps (Improved Redesign)

Breathable Airflow Back Pads



21" x 12" x 8.5" - 35 Liters

Naked Weight: 4.2 lbs

Weight W/ Accessories: 5.2 lbs

*Please note that at 21" tall, the 35L Drifter HD 4.0 may be too tall when fully packed out for certain budget airlines' 18" personal item sizers, although they will still fit below the seat and will fit in every budget airline/regional jet overhead compartment.


Attachments Included:

  • 4x Removable Premium Compression Straps 
  • 2x Removable Padded Handles
  • 1x Removable Chest Strap
  • 1x Removable Messenger Strap Attachment
  • 1x Removable Interior Divider (Improved Redesign)
  • 1x Removable Waist Strap Set
  • 1x Removable PU Coated Ripstop Rain Cover


Compatible Attachments (Not Included):

Basic Compression Straps, Economy Compression Straps & XL Compression Straps (Economy & Premium) - Available Separately 


Warranty Policy:

24 Month Included Warranty + Lifetime Post-Warranty Support

Lifetime YKK® Zipper Guarantee