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ZOOT CompressrX Ultra Short - Women's

$69.98 $174.95

Item # ZOT0320 Past Season Colors 60% Off

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Item # ZOT0320


A wearable advantage.

No matter what kind of shape that you're in, a triathlon will test your preparation. You need every advantage, and with Zoot's Women's CompressRx Tri Ultra Shorts, your output will be more consistent, and your recovery will be shorter.

It's no secret these days, the term 'compression' is thrown around rather loosely. But there are a handful of true compression-driven designers out there -- with one of the foremost being Zoot. Accordingly, you'll find that the pieces like the Ultra CompressRx Tri Shorts are actually close to medical grade.

In fact, prescription grade compression pressures run from 25mmHg and up, while the Ultra features pressures ranging from 18 to 25mmHg. How is this possible from a sports piece? Well, to start, the Ultra uses a 30 x 17 compression level, and 280 gram denier that specifically targets the muscle groups used in endurance exercise. So, according to Zoot's graduated compression ideology, each group, or zone, of compression work to stabilize the core areas of exertion within the legs. Effectively, this improves blood flow to the heart by accelerating the circulation. These core principles encompass what Zoot calls its ZoneRx and CRx graduated designs.

Over a run or ride, your muscles are constantly under assault from the detrimental effects of road or impact vibration. Over time, this variable will cause major muscle fatigue. So, to minimize this effect, the Ultra features Zoot's proprioception paneling. Basically, this means that the paneling is designed to account for the sensations that are enacted from within the body itself.

Everyone has what are called 'proprioceptors.' These are cells and nerves that emit stimuli to account for your body's position in movement. Or, in more basic terms, think of balance. Your unconscious sensory correction of staying upright is attributable to these cells. And you’re your body is performing repetitive, practiced movements, the impact on the required muscle groups also become predictable. So, the Zoot's design uses specific paneling to account for your body's internal movements. Even more impressively, over time, this localized support will train your muscle's non-visual sensory movements, and accordingly, it will enhance your body's proprioception.

We've already mentioned the importance of rapid circulation, but where most compression pieces go astray, is that the same pressures of compression are used throughout. So, the Ultra instead opts for a graduated, or gradient, design. Think of a value scale of shading -- darkest to lightest. Basically, graduated compression works the same way. With the Ultra, you'll find that the highest pressures fall at the bottom of the shorts, and then get gradually less constrictive towards the top. Essentially, this puts pressure on the muscles, arteries, and veins that are farthest away from the heart, ultimately forcing the body to circulate blood through narrower circulatory channels. So, almost like kinking a hose, it creates arterial pressure, and like when you finally release the kink, blood circulates faster to the heart.

Additionally, Zoot gave the fabric its SilverTech treatment in order to rapidly pull sweat away from the skin. Zoot also claims that SilverTech gives the fabric a 99.9% antimicrobial protection. And at the leg openings, you'll also find that the shorts feature Zoot's FREEfinish closure system that eliminates the need for poignant and painful elastic grippers.

The ZOOT Women's CompressrX Ultra Short are available in the color Black and in six sizes from Zero to Five.

Tech Specs

SyncroRX (70% polypropylene, 30% spandex)
graduated compression
UPF Rating:
Recommended Use:
active compression
Manufacturer Warranty:
1 year

Size chart


0 1 2 3 4 5
Chest 30 - 33in
(76.2 - 83.8cm)
33 - 35in
(83.8 - 88.9cm)
35 - 37in
(88.9 - 94.0cm)
37 - 39in
(94.0 - 99.1cm)
39 - 41in
(99.1 - 104.1cm)
41 - 43in
(104.1 - 109.2cm)
Bicep 8 - 9in
(20.3 - 22.9cm)
9 - 10in
(22.9 - 25.4cm)
10 - 12in
(25.4 - 30.5cm)
12 - 14in
(30.5 - 35.6cm)
14 - 16in
(35.6 - 40.6cm)
Shorts & Tights
0 1 2 3 4 5
Waist 25 - 27in
(63.5 - 68.6cm)
27 - 29in
(68.6 - 73.7cm)
29 - 32in
(73.7 - 81.3cm)
32 - 35in
(81.3 - 88.9cm)
35 - 39in
(88.9 - 99.1cm)
40 - 44in
(101.6 - 111.8cm)
Thigh 17.5 - 19.5in
(44.5 - 49.5cm)
19.5 - 21.5in
(49.5 - 54.6cm)
21.5 - 23.5in
(54.6 - 59.7cm)
23.5 - 25in
(59.7 - 63.5cm)
25 - 27in
(63.5 - 68.6cm)
27 - 30in
(68.6 - 76.2cm)
Calf 9.5 - 12in
(24.1 - 30.5cm)
12 - 13.5in
(30.5 - 34.3cm)
13.5 - 14.5in
(34.3 - 36.8cm)
14.5 - 16in
(36.8 - 40.6cm)
16 - 18in
(40.6 - 45.7cm)
18 - 20in
(45.7 - 50.8cm)
Calf Sleeves
1 2 3 4 5
Calf 12 - 13.5in
(30.5 - 34.3cm)
13.5 - 14.5in
(34.3 - 36.8cm)
14.5 - 16in
(36.8 - 40.6cm)
16 - 18in
(40.6 - 45.7cm)
18 - 20in
(45.7 - 50.8cm)
Bust 30in
How to Measure:
For best results, measure the listed body part unflexed at the largest area.
Measure under your arms, around the fullest part of your chest.
Measure around the upper arm keeping your bicep unflexed.
Measure around your natural waistline, keeping the tape a bit loose.
Measure around the fullest part of your upper leg.
Measure around the fullest part of your lower leg.

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Here's what others have to say...

Unanswered Question

Does anyone know the length of the short's...

Posted on

Does anyone know the length of the short's inseam?

do these shorts have a chamois?

Posted on

do these shorts have a chamois?

Responded on

I do not believe they come with a chamois. If they did, there would be a line in the specs stating the affirmative, and concomitantly providing a description of the type of chamois that came with the pants.

Responded on

Translation: no, there's no chamois in these shorts. I checked the manufacturer website to confirm.