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GT Shortsleeve Trainer and Matching Halftight

The JL Baselayer is a snug-fitting training or racing shirt, made of your choice of technical wicking fabrics. Designed for your body movement, the four-way stretch and super soft "hand" of the fabrics ensure peak performance. Contrast armstripe is standard, many options are available. Make your own shirt in our Design Studio, adding your colors, bells, whistles, trim and logos just about anywhere.

Click on an image below to see the many styles of the JL Baselayer with pricing and upgrade information

 Custom Design Studio Photo Gallery View Full Collection 

Custom Solid

Custom Group II

Custom Group III

Custom Group IV

Custom Group V


What fabric is best for my team?
Choose a fabric depending on these factors: climate; team colors; worn while racing or training; buff factor...

How custom can JL get with these shirts?
Well...we do a lot of things that aren't seen on this website--it would be hard to show them all! It doesn't hurt to ask!

Where can I get a JL?
The real, actual, original JL is only sold by JL.

 Sizing Charts for Shortsleeve Baselayers

Sizing information for Shortsleeve Baselayers.  How to measure, how to get that great JL fit!

 What do our stripes look like?

See what we mean by all the different names of our Stripes. 

Sustainable Practices
JL Walks the Walk

 Solar Panels, Recycled Fabrics, Employment Practices

Be a Winner!

Training is hard.
Working with us is easy.

You train hard