Rise In Comfort

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

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19 products
Pro Flex Max Boxer Brief: Vivid Blue from BN3TH Underwear Pro Flex Max Boxer Brief: Vivid Blue from BN3TH Underwear
New
Pro Flex Max Boxer Brief
Vivid Blue
Performance Polyester Mesh
Everyday Sport
$28.00 CAD
Pro Flex Max Boxer Brief: Outter Limit - Black from BN3TH Underwear Pro Flex Max Boxer Brief: Outter Limit - Black from BN3TH Underwear
New
Pro Flex Max Boxer Brief
Outter Limit - Black
Performance Polyester Mesh
Everyday Sport
$28.00 CAD
Pro Flex Max Boxer Brief: Real Tree - Woodland from BN3TH Underwear Pro Flex Max Boxer Brief: Real Tree - Woodland from BN3TH Underwear
New
Pro Flex Max Boxer Brief
Real Tree - Woodland
Performance Polyester Mesh
Everyday Sport
$28.00 CAD
Pro Flex Max Boxer Brief: Desert Racing - Forever from BN3TH Underwear Pro Flex Max Boxer Brief: Desert Racing - Forever from BN3TH Underwear
New
Pro Flex Max Boxer Brief
Desert Racing - Forever
Performance Polyester Mesh
Everyday Sport
$28.00 CAD
Pro Flex Max Boxer Brief: Godzilla - Lolite from BN3TH Underwear Pro Flex Max Boxer Brief: Godzilla - Lolite from BN3TH Underwear
New
Pro Flex Max Boxer Brief
Godzilla - Lolite
Performance Polyester Mesh
Everyday Sport
$28.00 CAD
Pro Flex Max Boxer Brief: Gothic Bouquet - Pink from BN3TH Underwear Pro Flex Max Boxer Brief: Gothic Bouquet - Pink from BN3TH Underwear
New
Pro Flex Max Boxer Brief
Gothic Bouquet - Pink
Performance Polyester Mesh
Everyday Sport
$28.00 CAD
Pro Flex Max Boxer Brief: Tropical Dusk from BN3TH Underwear Pro Flex Max Boxer Brief: Tropical Dusk from BN3TH Underwear
New
Pro Flex Max Boxer Brief
Tropical Dusk
Performance Polyester Mesh
Everyday Sport
$28.00 CAD
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 A male model standing in profile wearing black boxer briefs against a smooth gray studio background. 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: Tie Dye Pineapple Ombre-Navy | BN3TH Underwear Pro Flex Max Boxer Brief: Tie Dye Pineapple Ombre-Navy | BN3TH Underwear
Pro Flex Max Boxer Brief
Tie Dye Pineapple Ombre-Navy
Performance Polyester Mesh
Everyday Sport
$28.00 CAD
Pro Flex Max Boxer Brief: Black | BN3TH Underwear Pro Flex Max Boxer Brief: Black | BN3TH Underwear
Pro Flex Max Boxer Brief
Black
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
Pro Flex Boxer Brief: Oversized Covert Camo Pro Flex Boxer Brief: Oversized Covert Camo
Pro Flex Boxer Brief
Oversized Covert Camo
Performance Polyester Mesh
All Purpose Sport
$28.00 CAD
Pro Flex Boxer Brief: Recovery Black Pro Flex Boxer Brief: Recovery Black
Pro Flex Boxer Brief
Recovery Black
Performance Polyester Mesh
All Purpose Sport
$0.00 CAD $28.00 CAD