Rise In Comfort

The updated Pro Flex is made to move with minimal friction and total support.

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Pro Flex Boxer Brief: Black/Skydiver/Acid Lime 3 Pack| BN3TH Underwear Pro Flex Boxer Brief: Black/Skydiver/Acid Lime 3 Pack| BN3TH Underwear
-9%
Pro Flex Boxer Brief
Black/Skydiver/Acid Lime 3 Pack
Performance Polyester Mesh
All Purpose Sport
$84.00 CAD $76.00 CAD
Pro Flex Boxer Brief: Black Pro Flex Boxer Brief: Black
Pro Flex Boxer Brief
Black
Performance Polyester Mesh
All Purpose Sport
$28.00 CAD
Pro Flex Boxer Brief: Pitch Green Pro Flex Boxer Brief: Pitch Green
Pro Flex Boxer Brief
Pitch Green
Performance Polyester Mesh
All Purpose Sport
$0.00 CAD $28.00 CAD
Pro Flex Boxer Brief: Recovery Blue Pro Flex Boxer Brief: Recovery Blue
Pro Flex Boxer Brief
Recovery Blue
Performance Polyester Mesh
All Purpose Sport
$0.00 CAD $28.00 CAD
Pro Flex Max Boxer Brief: Smokey Palms-Blue Lolite | BN3TH Underwear Pro Flex Max Boxer Brief: Smokey Palms-Blue Lolite | BN3TH Underwear
New
Pro Flex Max Boxer Brief
Smokey Palms-Blue Lolite
Performance Polyester Mesh
Everyday Sport
$28.00 CAD
Pro Flex Max Boxer Brief: Roses-Dark Navy | BN3TH Underwear Pro Flex Max Boxer Brief: Roses-Dark Navy | BN3TH Underwear
New
Pro Flex Max Boxer Brief
Roses-Dark Navy
Performance Polyester Mesh
Everyday Sport
$28.00 CAD
Pro Flex Max Boxer Brief: Pixel Matrix-Black | BN3TH Underwear Pro Flex Max Boxer Brief: Pixel Matrix-Black | BN3TH Underwear
New
Pro Flex Max Boxer Brief
Pixel Matrix-Black
Performance Polyester Mesh
Everyday Sport
$28.00 CAD
Pro Flex Max Boxer Brief: Alleyway-Blue Lolite | BN3TH Underwear Pro Flex Max Boxer Brief: Alleyway-Blue Lolite | BN3TH Underwear
New
Pro Flex Max Boxer Brief
Alleyway-Blue Lolite
Performance Polyester Mesh
Everyday Sport
$28.00 CAD
Pro Flex Max Boxer Brief: Tie Dye Pineapple Ombre-Navy | BN3TH Underwear Pro Flex Max Boxer Brief: Tie Dye Pineapple Ombre-Navy | BN3TH Underwear
New
Pro Flex Max Boxer Brief
Tie Dye Pineapple Ombre-Navy
Performance Polyester Mesh
Everyday Sport
$28.00 CAD
Pro Flex Max Boxer Brief: Sunset Racing-Cerise | BN3TH Underwear Pro Flex Max Boxer Brief: Sunset Racing-Cerise | BN3TH Underwear
New
Pro Flex Max Boxer Brief
Sunset Racing-Cerise
Performance Polyester Mesh
Everyday Sport
$28.00 CAD
Pro Flex Max Boxer Brief: Spectrum-Shadow | BN3TH Underwear Pro Flex Max Boxer Brief: Spectrum-Shadow | BN3TH Underwear
New
Pro Flex Max Boxer Brief
Spectrum-Shadow
Performance Polyester Mesh
Everyday Sport
$28.00 CAD
Pro Flex Max Boxer Brief: Electric Palm-Heather Sand | BN3TH Underwear Pro Flex Max Boxer Brief: Electric Palm-Heather Sand | BN3TH Underwear
New
Pro Flex Max Boxer Brief
Electric Palm-Heather Sand
Performance Polyester Mesh
Everyday Sport
$28.00 CAD
Pro Flex Max Boxer Brief: Black | BN3TH Underwear Pro Flex Max Boxer Brief: Black | BN3TH Underwear
New
Pro Flex Max Boxer Brief
Black
Performance Polyester Mesh
Everyday Sport
$28.00 CAD
Pro Flex Max Boxer Brief: Beet Red | BN3TH Underwear Pro Flex Max Boxer Brief: Beet Red | BN3TH Underwear
New
Pro Flex Max Boxer Brief
Beet Red
Performance Polyester Mesh
Everyday Sport
$28.00 CAD
Pro Flex Max Boxer Brief: Mykonos Blue | BN3TH Underwear Pro Flex Max Boxer Brief: Mykonos Blue | BN3TH Underwear
New
Pro Flex Max Boxer Brief
Mykonos Blue
Performance Polyester Mesh
Everyday Sport
$28.00 CAD
Pro Flex Boxer Brief : Skydiver/Electric Tangerine 2 Pack Pro Flex Boxer Brief : Skydiver/Electric Tangerine 2 Pack
-10%
Pro Flex Boxer Brief
Skydiver/Electric Tangerine 2 Pack
Performance Polyester Mesh
All Purpose Sport
$56.00 CAD $50.00 CAD