Training

The OS1st IT3™ Performance ITB Sleeve treats ITB Syndrome (Iliotibial Band Syndrome) and related pain. Hypoallergenic gel support system keeps sleeve in place while active. Easily slips on and off with a thin profile that fits under all apparel, even tights. More comfortable and effective than traditional straps or bands and is shaped to your size.

Targeted Conditions:

• Iliotibial Band Syndrome
• Upper Lateral Knee Stress

• Advanced patent pending medical device for ITB Syndrome and leg fatigue
• Easy-on fit for continuous support 
• Medical Grade Support
• Wear comfortably under all apparel while exercising for extra protection and injury prevention
• Sized and shaped to fit for ultimate performance

• Small: 12"-16"
• Medium: 14"-18"
• Large: 16"-20"
• Extra Large: 18.5"-22.5"

The KS7® Performance Knee Sleeve, powered by Compression Zone Technology®, with gel stabilizers fully embraces the knee and patella in seven zones of compression. KS7® is specifically designed to improve circulation while bracing the joint and supporting the patella from above and below, relieving pressure on the Patellar Tendon. This Patented medical device targets conditions such as Patellar Tendonitis, Iliotibial Band Syndrome, Arthritis, eases knee pain and reduces swelling. This thin but powerful bracing sleeve can offer the same benefits as bulkier braces and can be worn under clothing. The performance-tested KS7® offers all-over knee support for any activity while comfortably staying in place.

How To Select Size (Measurement is the thigh circumference in inches)

1. Slightly bend the knee you want to measure at about 30 degrees
2. Measure your thigh circumference 4" above patella
3. Select your size based on your Above Patella Circumference Measurments

• Small: 11"-12"
• Medium: 13"-15"
• Large: 16"-18"
• Extra Large: 19"-21"
• Extra Extra Large: 22"-24" 

The KS7® Performance Knee Sleeve, powered by Compression Zone Technology®, with gel stabilizers fully embraces the knee and patella in seven zones of compression. KS7® is specifically designed to improve circulation while bracing the joint and supporting the patella from above and below, relieving pressure on the Patellar Tendon. This Patented medical device targets conditions such as Patellar Tendonitis, Iliotibial Band Syndrome, Arthritis, eases knee pain and reduces swelling. This thin but powerful bracing sleeve can offer the same benefits as bulkier braces and can be worn under clothing. The performance-tested KS7® offers all-over knee support for any activity while comfortably staying in place.

How To Select Size (Measurement is the thigh circumference in inches)

1. Slightly bend the knee you want to measure at about 30 degrees
2. Measure your thigh circumference 4" above patella
3. Select your size based on your Above Patella Circumference Measurments

• Small: 11"-12"
• Medium: 13"-15"
• Large: 16"-18"
• Extra Large: 19"-21"
• Extra Extra Large: 22"-24" 

The Swing Shift caresses the skin with the finest beechwood fibre in our signature Modal fabric. Pure heavenly softness. Perfection in your pants.

• Patented Joey Pouch® for support and comfort

• No-Drip-Tip™ with hydrophobic membrane for a dry environment

• Premium 35mm roll-resistant waistband

• Tagless, mid-rise, regular Long Leg

• Signature quick access front fly

• Smooth, chafe-free, flatlock seam construction

• Fabric resists shrinkage and rejects hard water deposits to stay soft and resist fading

• 95% Lenzing Modal, 5% Elastane

The Swing Shift caresses the skin with the finest beechwood fibre in our signature Modal fabric. Pure heavenly softness. Perfection in your pants.

• Patented Joey Pouch® for support and comfort

• No-Drip-Tip™ with hydrophobic membrane for a dry environment

• Premium 35mm roll-resistant waistband

• Tagless, mid-rise, regular Long Leg

• Signature quick access front fly

• Smooth, chafe-free, flatlock seam construction

• Fabric resists shrinkage and rejects hard water deposits to stay soft and resist fading

• 95% Lenzing Modal, 5% Elastane

Lasso Socks are designed with a pure focus on functionality, followed by form. These performance socks are engineered to help the wearer Stay Moving in every way and in any condition. Lasso's patented SmartSupport™ socks are a proprietary blend of targeted compression weave patterns and sustainable yarns designed to deliver maximum comfort and structural support in any environment. With firm SmartSupport™ compression and superior moisture wicking, the Lasso Sock reduces muscle fatigue and soreness, and speeds up muscle recovery. Proudly made in the USA, each pair of Lasso Socks are crafted to improve your sport, hike, climb, walk, bike, run or any adventure you seek. Stay moving.

Lasso Socks are designed with a pure focus on functionality, followed by form. These performance socks are engineered to help the wearer Stay Moving in every way and in any condition. Lasso's patented SmartSupport™ socks are a proprietary blend of targeted compression weave patterns and sustainable yarns designed to deliver maximum comfort and structural support in any environment. With firm SmartSupport™ compression and superior moisture wicking, the Lasso Sock reduces muscle fatigue and soreness, and speeds up muscle recovery. Proudly made in the USA, each pair of Lasso Socks are crafted to improve your sport, hike, climb, walk, bike, run or any adventure you seek. Stay moving.

With 2UNDR you can feel it right away, pure heavenly softness. The Swing Shift Boxer Brief caresses the skin with the finest beechwood fiber in 2UNDR'S signature modal fabric. Additionally, the material resists shrinkage, and is less likely to fade or pill as a result of friction. The smoothness of the fabric also rejects hard water deposits, allowing it to stay soft through repeated wash cycles.
Features: -Tagless, Mid-rise Regular Fit Boxer Brief -Premium 32mm roll-resistant waistband -Signature quick access front fly -Joey Pouch for support and comfort -Smooth, chafe-free, flatlock seam construction -Pure beechwood fiber modal fabric blend -Unparalleled fit and feel.

With 2UNDR you can feel it right away, pure heavenly softness. The Swing Shift Boxer Brief caresses the skin with the finest beechwood fiber in 2UNDR'S signature modal fabric. Additionally, the material resists shrinkage, and is less likely to fade or pill as a result of friction. The smoothness of the fabric also rejects hard water deposits, allowing it to stay soft through repeated wash cycles.
Features: -Tagless, Mid-rise Regular Fit Boxer Brief -Premium 32mm roll-resistant waistband -Signature quick access front fly -Joey Pouch for support and comfort -Smooth, chafe-free, flatlock seam construction -Pure beechwood fiber modal fabric blend -Unparalleled fit and feel.

The Swing Shift caresses the skin with the finest beechwood fibre in our signature Modal fabric. Pure heavenly softness. Perfection in your pants.

• Patented Joey Pouch® for support and comfort

• No-Drip-Tip™ with hydrophobic membrane for a dry environment

• Premium 35mm roll-resistant waistband

• Tagless, mid-rise, regular Long Leg

• Signature quick access front fly

• Smooth, chafe-free, flatlock seam construction

• Fabric resists shrinkage and rejects hard water deposits to stay soft and resist fading

• 95% Lenzing Modal, 5% Elastane

Stay comfy and dry all through your day when you have the 2UNDR™ Men’s Flow Shift Boxer Briefs, which feature an innovative Joey Pouch™ for secure, in-place comfort. Additionally, these underwear are made with signature modal fabric for superior softness.

Stay comfy and dry all through your day when you have the 2UNDR™ Men’s Flow Shift Boxer Briefs, which feature an innovative Joey Pouch™ for secure, in-place comfort. Additionally, these underwear are made with signature modal fabric for superior softness.

Stay comfy and dry all through your day when you have the 2UNDR™ Men’s Flow Shift Boxer Briefs, which feature an innovative Joey Pouch™ for secure, in-place comfort. Additionally, these underwear are made with signature modal fabric for superior softness.

Our casual first layer performance Long John features the patented Joey Pouch® to give the same 2UNDR fit and feel while preventing unwanted skin contact. The 4-way stretch Bamboo – Cotton blend makes them lavishly soft and stretchy. Whether you’re on the ice or in the cabin, keep warm and dry with this cozy leisurewear.

• Patented Joey Pouch® for support and comfort

• Premium 35mm roll-resistant waistband

• Tagless, mid-rise, regular fit ankle length with 30" inseam

• Signature quick access front fly

• Smooth, chafe-free, flatlock seam construction

• 65% Bamboo, 30% Cotton, 5% Elastane

2UNDR’s Swing Shift Boxer Brief is the definition of pure, heavenly softness. With the finest, most gentle beechwood fiber featured in 2UNDR’s signature, modal fabric, you’ll always be comfortable wearing it, no matter what you’re doing. The material is also resistant to shrinkage, and less likely to pill or fade from friction. The fabric’s smooth texture rejects hard water deposits, maintaining its softness through several washes.

The Swing Shift Boxer Brief features a tagless design, a Mid-rise Regular Fit Boxer Brief size, a Premium 32mm roll-resisting waistband, a Signature Quick Access front fly, a Joey Pouch for comfort and support, and smooth, chafe-free flatlock seam construction. The unparalleled fit and feel from this pristine pair of beechwood fiber modal fabric boxer briefs makes it essential to your comfort.

Features a fun flamingo graphic print.

Looking for cool style and premium comfort in your boxer briefs? 2UNDR knows exactly how to make the perfect blend with no sacrifices to the wearer’s enjoyment. The beechwood fiber and signature modal fabric of the Swing Shift Boxer Briefs make it the perfect upgrade to your personal comfort levels.

The premium tagless, 32mm roll-resistant waistband design makes this pair of boxer briefs both practical and comfortable. It also features a quick access fly, a Joey Pouch, and chafe-free, seamlock construction. It’s also great for repeated washes, resisting hard water deposits, pilling, and fading. These mid-rise regular fit boxer briefs are the perfect addition to your wardrobe.

A colorful peacock design paired with comfortable beechwood fiber and signature modal fabric. This pair of boxer briefs is as satisfying to wear as it is comfortable— and with 2UNDR, you don’t have to make any sacrifices to get the comfort you deserve. This pair of boxer briefs features:

• Premium, tagless design.





• 32mm roll-resistant waistband.





• A Joey Pouch





• Signature Quick Access Fly





• Chafe-free, Seamlock Construction





• Resistant to hard water deposits.





• Resistant to pilling and fading from friction.

A perfectly designed pair of boxer briefs for your summertime wardrobe, 2UNDR’s Swing Shift Long Leg with the Pool Party design will bring both liveliness and absolute comfort to your wardrobe.

• Features the Signature Joey Pouch® for premium comfort and support.





• No-Drip-Tip™ creates a hydrophobic membrane optimal for a dry environment.





• Tagless, mid-rise regular long leg design.





• 35mm roll-resistant waistband.





• The signature Quick Access front fly.





• Comfortably smooth, chafe-free flatlock seam.





• Shrink-resistant fabric, preventing hard water deposits and keeping its softness.





• 95% Lenzing Modal, 5% Elastane construction.

2UNDR knows how to make a heavenly pair of boxer briefs. Made with gentle, beechwood fiber and 2UNDR’s signature modal fabric, you’ll be incredibly comfortable wearing these boxer briefs. This pair of boxer briefs is optimally made to be resistant to shrinkage, and reduces the chance of pilling or fading from friction. The smoothness of the fabric prevents it from taking in hard water deposits, keeping its delicate softness through several washes.

The Swing Shift Boxer Brief comes with a tagless design, a premium 32mm roll-resistant waistband, mid-rise regular fit boxer brief size, a quick access front fly, and Joey Pouch for optimal comfort and support. Not to mention, the boxer briefs have a chafe-free, flatlock seam construction that continues to keep it comfortable for all wearers. It has everything you need, so upgrade your comfort levels and give this pair of boxer briefs a chance.

Cancun-inspired graphic print.