
The Brown Buffalo : ConcealPack™ 21L : Black Multicam®
Award-winning 21L tactical backpack with IPX4 weather resistance. Built for quiet, purposeful carry — trusted by military operators and built for everyday life.
The ConcealPack® 21L was born out of real-world necessity on a trip from California to Australia through Tokyo's crowded commuter lines. Refined with feedback from active duty military, EOD specialists, law enforcement, and private security professionals. Every stitch is intentional. Designed by a founder with 25+ years at Nike, The North Face, and Burton.
The ConcealPack isn’t defined by one user group; it’s shaped by everyone who has trusted it, from active duty operators to riders, travelers, designers, and everyday professionals who value quiet capability. Designed and Developed The Brown Buffalo's Costa Mesa workshop, surrounded by a community of independent thinkers and craftspeople, this pack carries the collective experience of people who understand the importance of equipment that simply works.
A question we hear often: “What are the buckles and D-rings on the front for on the shoulder straps?”
We don’t advertise these heavily, but they exist for a reason. Over the years, we’ve incorporated subtle functionality requested by operators in the military, law enforcement, and EOD communities. Those who need them know exactly what they’re for, everyone else just gets clean hardware that integrates seamlessly into the silhouette.
Specifications
• Capacity: 21L
• Dimensions: 49.5H × 30.5W × 15.2D cm
• Weight: 1.32 kg
• Laptop: Fits MacBook Pro 14" (add sleeve for 15"+)
• Water Resistance: IPX4 Rated
• Tablet: Fits up to 11" tablet
MATERIAL
CHALLENGE UltraGrid™ 210D Nylon
- Lightweight technical fabric engineered for strength, sustainability, and structure.
- Strength: Woven with 210D recycled nylon and UHMWPE ripstop grid for exceptional tear resistance.
- Built For: Everyday carry and travel—balancing rugged durability with minimal weight.
Challenge® Sailcloth EPX400
- Eco-friendly, ultra-durable fabric with reinforced cross-ply structure.
- Strength: 2× more abrasion-resistant than standard nylon.
- Built For: Resisting wear from daily abuse and rough surfaces.
APEX® 3D Spacer Mesh with A.M.Y.® / Sorbtek® Yarn
- Military-grade breathable mesh with antimicrobial protection.
- Comfort: 6× faster moisture wicking than standard materials.
- Built For: All-day comfort in demanding conditions.
YKK® RCPU2 Zippers
- Special coil design built for durability and high-performance operation.
- Durability: Resists abrasion while maintaining smooth glide action.
- Built For: Heavy use in tough conditions without compromising performance.
Original: $249.67
-70%$249.67
$74.90More Images












The Brown Buffalo : ConcealPack™ 21L : Black Multicam®
Award-winning 21L tactical backpack with IPX4 weather resistance. Built for quiet, purposeful carry — trusted by military operators and built for everyday life.
The ConcealPack® 21L was born out of real-world necessity on a trip from California to Australia through Tokyo's crowded commuter lines. Refined with feedback from active duty military, EOD specialists, law enforcement, and private security professionals. Every stitch is intentional. Designed by a founder with 25+ years at Nike, The North Face, and Burton.
The ConcealPack isn’t defined by one user group; it’s shaped by everyone who has trusted it, from active duty operators to riders, travelers, designers, and everyday professionals who value quiet capability. Designed and Developed The Brown Buffalo's Costa Mesa workshop, surrounded by a community of independent thinkers and craftspeople, this pack carries the collective experience of people who understand the importance of equipment that simply works.
A question we hear often: “What are the buckles and D-rings on the front for on the shoulder straps?”
We don’t advertise these heavily, but they exist for a reason. Over the years, we’ve incorporated subtle functionality requested by operators in the military, law enforcement, and EOD communities. Those who need them know exactly what they’re for, everyone else just gets clean hardware that integrates seamlessly into the silhouette.
Specifications
• Capacity: 21L
• Dimensions: 49.5H × 30.5W × 15.2D cm
• Weight: 1.32 kg
• Laptop: Fits MacBook Pro 14" (add sleeve for 15"+)
• Water Resistance: IPX4 Rated
• Tablet: Fits up to 11" tablet
MATERIAL
CHALLENGE UltraGrid™ 210D Nylon
- Lightweight technical fabric engineered for strength, sustainability, and structure.
- Strength: Woven with 210D recycled nylon and UHMWPE ripstop grid for exceptional tear resistance.
- Built For: Everyday carry and travel—balancing rugged durability with minimal weight.
Challenge® Sailcloth EPX400
- Eco-friendly, ultra-durable fabric with reinforced cross-ply structure.
- Strength: 2× more abrasion-resistant than standard nylon.
- Built For: Resisting wear from daily abuse and rough surfaces.
APEX® 3D Spacer Mesh with A.M.Y.® / Sorbtek® Yarn
- Military-grade breathable mesh with antimicrobial protection.
- Comfort: 6× faster moisture wicking than standard materials.
- Built For: All-day comfort in demanding conditions.
YKK® RCPU2 Zippers
- Special coil design built for durability and high-performance operation.
- Durability: Resists abrasion while maintaining smooth glide action.
- Built For: Heavy use in tough conditions without compromising performance.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Award-winning 21L tactical backpack with IPX4 weather resistance. Built for quiet, purposeful carry — trusted by military operators and built for everyday life.
The ConcealPack® 21L was born out of real-world necessity on a trip from California to Australia through Tokyo's crowded commuter lines. Refined with feedback from active duty military, EOD specialists, law enforcement, and private security professionals. Every stitch is intentional. Designed by a founder with 25+ years at Nike, The North Face, and Burton.
The ConcealPack isn’t defined by one user group; it’s shaped by everyone who has trusted it, from active duty operators to riders, travelers, designers, and everyday professionals who value quiet capability. Designed and Developed The Brown Buffalo's Costa Mesa workshop, surrounded by a community of independent thinkers and craftspeople, this pack carries the collective experience of people who understand the importance of equipment that simply works.
A question we hear often: “What are the buckles and D-rings on the front for on the shoulder straps?”
We don’t advertise these heavily, but they exist for a reason. Over the years, we’ve incorporated subtle functionality requested by operators in the military, law enforcement, and EOD communities. Those who need them know exactly what they’re for, everyone else just gets clean hardware that integrates seamlessly into the silhouette.
Specifications
• Capacity: 21L
• Dimensions: 49.5H × 30.5W × 15.2D cm
• Weight: 1.32 kg
• Laptop: Fits MacBook Pro 14" (add sleeve for 15"+)
• Water Resistance: IPX4 Rated
• Tablet: Fits up to 11" tablet
MATERIAL
CHALLENGE UltraGrid™ 210D Nylon
- Lightweight technical fabric engineered for strength, sustainability, and structure.
- Strength: Woven with 210D recycled nylon and UHMWPE ripstop grid for exceptional tear resistance.
- Built For: Everyday carry and travel—balancing rugged durability with minimal weight.
Challenge® Sailcloth EPX400
- Eco-friendly, ultra-durable fabric with reinforced cross-ply structure.
- Strength: 2× more abrasion-resistant than standard nylon.
- Built For: Resisting wear from daily abuse and rough surfaces.
APEX® 3D Spacer Mesh with A.M.Y.® / Sorbtek® Yarn
- Military-grade breathable mesh with antimicrobial protection.
- Comfort: 6× faster moisture wicking than standard materials.
- Built For: All-day comfort in demanding conditions.
YKK® RCPU2 Zippers
- Special coil design built for durability and high-performance operation.
- Durability: Resists abrasion while maintaining smooth glide action.
- Built For: Heavy use in tough conditions without compromising performance.

