blue underscrub for men

Men's Core One Short Sleeve Tee

Quick Overview

Introducing the first t-shirt that works as hard as you do. A moisture-wicking performance knit that is lightweight, and breathable with bacteriostatic technology to keep you dry and odor free all day - at work, at the gym, or in any setting.

Size Guide

Availability:In stock

Gift wrap available

  • S
  • M
  • L
  • XL
  • 2XL


It's what's underneath that matters most.

Whether you’re flying through a long shift, running up your favorite trail or taking a break after work. This performance knit will get you there in style, while keeping you fresh and odor free. The technical ergonomic seam lines stand up to the toughest days, providing the strength and flexibility you need for any occasion.

  • Extremely soft and lightweight performance fabric feels like an additional layer of skin.
  • Durable material that resists pilling and fading over time.
  • Bacteriostatic, odor-free fabric that is worn close to the body.
  • Reinforced seams and fabric that retains its shape.
  • Optimized for comfort during long shifts, then yoga class, and then to the grocery store.
  • This shirt is meant to be lived in.

Men's Core One Tee Shirts

Self Measurements (measured in inches)
Medelita Tee Size S M L XL 2XL
Chest 38.5 40.5 42.5 45.5 48.5
Waist 36.25 38.25 40.25 43.25 46.25
International Conversions
US 36 38 40 42 44 46 48 50 52
UK 36 38 40 42 44 46 48 50 52
Europe 46 48 50 52 54 56 58 60 62
Italy 46 48 50 52 54 56 58 60 62
Austrailia 36 38 40 42 44 46 48 50 52
Japan 38 40 42 44 46 48 50 52 54
France 46 48 50 52 54 56 58 60 62

Measure from the fullest part of chest and scapula, arms at sides and relaxed, approximately 1" below axilla. Be sure measuring tape is parallel to the floor. Allow 1-2 fingers below tape for comfort.


Measure the full circumference of your best fitting jeans, with them zipped and buttoned, ensuring that you slowly follow the exact line of the fabric with a flexible tape measure.

size guide
Men's Tees

Place a measuring tape around the largest part of your chest. Make sure the tape measure lays flat against you, but not too tight.


Waist – Your natural waist falls halfway between your bottom ribs and your hip bones. Please the tape measure at the smallest point between those two points, allowing 1/4” of slack.

Call 877.987.7979 or email for sizing help.

Core One Tee

Care Instructions


Pre-treat stains prior to washing.


Machine wash warm, regular cycle. Do not use chlorine bleach. Do not use liquid fabric softener - it will block the moisture wicking fabric feature.


Tumble dry on delicate/warm or lay flat to dry. Do not use a dryer sheet - it will block the moisture wicking fabric feature.


No ironing is necessary. Fabric is naturally wrinkle resistant.

Stain Removal

  • Amodex® Ink and Stain Remover
    Ink, Pen
  • OxiClean® Spray
    Blood, Coffee, General Stains, Tea
  • Shout® Advanced Stain Lifting Foam
    Cream-Based Makeup, Grease, Oil, Pus
  • The Laundress™ Stain Solution
    Deodorant, Iodine, Perspiration
  • Order 2 Sizes

    Shipping is free both ways in the U.S.

  • Return your preferred size for

    Custom Embroidery

  • Easily Print UPS Return Labels

    In your order history


4 Reasons To Try On At Home

  1. Convenience.
    Try on your garments on your own time. Keep what you like and send back the rest, or send back what you would like to be embroidered. We will process your embroidery or refund your purchase as soon as possible.
  2. No Fees.
    Purchases over $100 are automatically eligible for free shipping and returns within the United States (free shipping and returns not available in Alaska, Hawaii, or Puerto Rico - a $5 flat fee applies each way).
  3. Risk Free.
    Prior to specifying embroidery, order two sizes to find your best fit, and take advantage of free return shipping over $100. Let us know which garments to embroider and we'll refund the remaining garments.
  4. It's Easy.
    Simply log into your account, find your order, and print a UPS return label for exchange, refund and/or embroidery.


Frequently Asked Questions

Colleague Reviews

core one performance technology

core one - what's underneath
moisture wicking tshirts
odor control tshirts

A Complete Solution For Life + Work

CORE ONE PERFORMANCE fabric is a second layer of skin for any occasion. Meant to be lived in, it's perfect under your scrubs or simply on its own in any active or leisure setting.

stretch active tshirts

Contoured For Comfort

Medelita CORE ONE PERFORMANCE fabric is unlike any other active leisure fabric available in that it's an extremely lightweight fabric that is as soft as it is durable, making it the perfect ingredient in your active lifestyle.

Built To Last

While every other tee in your wardrobe falls apart, Medelita CORE ONE products retain their shape and have been rigorously tested to stand up to repeated washes and abuse.


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