The EXP Series Fat Frame Packs are bikepacking and touring frame bags that create storage capacity in the main triangle of your frame, keeping weight centered, and gear out of the way of off-road obstacles. Our EXP Series Fat Frame Packs feature wider dimensions that are perfect for bulky cold-weather clothing, or multi-day off-the-grid supplies. Built with extremely durable fabric and zippers, the result will see you through many miles, and many adventures. These Frame Packs are designed to fit our fat bike frames perfectly.
Weather resistant with fully welded-in #10 YKK weather-resistant zippers
Internal hook-and-loop divider for separating gear and managing storage
Exit port along toptube for use with water bladder or lights
Non-driveside flat pocket for storage of maps, tools, phones, wallet, etc.
Materials – 500D nylon with TPU lamination and PU coating, 1000D polyester with dual-sided TPU lamination, #10 weather-resistant YKK zippers, Duraflex hardware
Construction Methods – Cut and sewn with welded-in zippers
Pack 1: XS and SM Heyday!/Mukluk Aluminum and Carbon. XS and SM Blackborow. SM Blackborow V2.
Pack 2: MD Heyday!/Mukluk Aluminum and Carbon. MD Blackborow and Blackborow V2.
Pack 3: LG and XL Heyday!/Mukluk Aluminum. LG Heyday!/Mukluk Carbon. LG and XL Blackborow. LG Blackborow V2.
Pack 4: XL Heyday!/Mukluk Carbon.
Pack 5: XS Beargrease Carbon V2
Pack 6: SM Beargrease Carbon V1 & V2
Pack 7: MD Beargrease Carbon V1 & V2
Pack 8: LG Beargrease Carbon V1 & V2
Pack 9: XL Beargrease Carbon V1 & V2
Warning for Residents of California
⚠️ WARNING: This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Note: This product contains per- and polyfluoroalkyl substances (PFAS). CA and NY have prohibited the sale of products containing PFAS effective 01/01/2025. All items containing PFAS will be removed from orders shipping to CA or NY on or after this date. To learn more, click here.
