The Women's Mach Allegiance MK1 Tri Jersey is a tribute to all of those who serve us both previous and current. Stand out at the finish line supporting those who have served. This aero jersey stands as part of a kit, or as a single.

Built using the highest quality fabrics sustainably sourced and sustainably manufactured in the US, we spared no research or expense in producing the best aero jersey in the world. Breathable and fast materials make this your go-to jersey for not just racing, but training and casual riding as well.

We tested over 17 prototypes in creating the perfect fit which means you are more aero and more comfortable for the duration of your event, no matter how long.


  • Ultra-lightweight, breathable fabrics made from sustainable materials.
  • Stitching designed to reduce drag while also minimizing the possibility of chaffing.
  • Side entry pockets to keep the wind out and keep you tucked and aero.
  • Locking zipper to ensure your top stays fit.
  • UPF 50 sun protection.
  • Exclusive gripper provides an in-place fit and finish.

Customer Reviews

Based on 5 reviews
Erin Stone
Great Kit!

Not only is the design and the colors super cool, this is such a comfortable kit with great attention to detail. The pockets are deep enough to carry fuel that is easy to access while in motion. The material is super breathable and soft. The chamois is well placed with no wonky seams. And the shorts don’t ride up!

Great Product!

The women's Colorado Tri jersey is nicely made. The quality is top notch and the fabric is really comfortable. I ordered a size small and it fits my perfectly. (5'6", 125lb). I have tiny arms but the small still fit my little biceps with a gentle snug. (Other brands I have to order an extra small if I want a "race fit" without any fabric flap.) I love the colors/pattern and the pockets are easily accessible. I also bought the matching small tri shorts and they are too big. They could fit but they are a little loose in the bum and legs. I have returned them and am waiting for the extra small tri short. Mach has been super easy and nice about the exchange. I recommend their products!

Kirsten Robinson
So soft, perfect fit!

I am so excited about this jersey! It fits perfectly if you follow the sizing chart! It also is so soft and comfortable. I tested it out on a brick and it worked perfect - it’s very light weight and didn’t move! I highly recommend this jersey!

Great jersey!

I love the design and fit of this jersey. The fabric feels great and is really light and breathable. The pockets on the back are more aero than any of my other jerseys. The color looks a little more purple in person than the photos on the website and fits true to size. I would highly recommend this jersey for any cyclist!

Enja Ahearn
Great fit, so comfy!

I'm thrilled with how this jersey came out. The material is light, soft and comfortable. I wore it in 100 degree weather this past weekend and it kept me cool throughout the ride. Would definitely recommend!