Just In — American Southwest Part 2


Free shipping on all orders $50+

Free Exchanges + No-fuss Returns

run everywhere
free shipping on
orders over $50
free 60 day exchanges
+ no-fuss returns

9" Groundwork Half Tight

Unit price  per 

9" Groundwork Half Tight

M's 9" Groundwork Half Tight

Heads up, this gear will ship in 6-10 weeks. Learn more about pre-orders.


Join now to unlock access

run everywhere guarantee
free shipping over $50
free 60 day exchanges
Formfitting, Size Chart William is 6'1" and wears size M

Amplify your run — the brand new Groundwork Half Tight is made to enhance your endurance pursuits with lightweight compression, moisture-wicking comfort, and six pockets to easily stash everything you need.

Explore more

Print Story

The Spray Dye print capsule is inspired by the distinct differences of each waterway on this planet, and the greater interconnectivity they all share as a singular body.

Pocket it your way

Double-tiered side pockets can fit any size phone, nutrition, a packable windshell like our Zephyr Runner, 250ml soft-flasks or anything else you prefer to carry when going the distance

Made for smooth moves

Laser cut hems provide a seamless, smooth finish while the inseam gusset accommodates the biggest strides



All about the Groundwork
Breathable, moisture-wicking fabric with 4-way stretch provides light compression with an unnoticeable feel in stride

Softer, breathable waistband
The knit waistband with external facing drawcord allows for a secure, comfortable fit while perforations enhance breathability

Dual-layer front panel
Double layered fabric on the front keeps things secure + adds extra modesty

Pockets made for distance
Deep double-tiered side pockets can easily accommodate the largest phone sizes (plus case), nutrition + 250ml soft-flasks to provide ample carrying capacity for longer excursions

Keep it separated
An internal waistband pocket can stash card/cash or key

Back pocket duals as pass-thru
A back pocket ideal for nutrition storage can be accessed from either side or can be used as a pass-thru to secure a top or lightweight layer

Clean cut
Laser cut hems provide a seamless, smooth finish

materials + specs

Groundwork Knit
68% nylon, 32% spandex

Garment made in Vietnam

Weight 128g / 4.5oz (M’s Medium)

Fabric Callout


High-performance, moisture-wicking stretch nylon with durable support. Explore more behind our tights and sports bra fabric.


care instructions

Wash before first use on cold with like colors

Tumble dry low

Heads up — some color bleed may occur
Color bleed, especially with darker colored nylon/spandex blends, is common and could stain light colored garments if washed together.


Groundwork Knit is made using a premium grade nylon that has a significantly tighter woven filament than standard synthetics. Tighter filaments mean less microfiber shedding in the wash-cycle, plus greater durability of the garment (longer lifespan, more wearing).

Groundwork Knit fabric is also bluesign® certified meaning it is free from harmful chemicals and is fabricated in a way that meets a high environmental standard.

Learn more about our sustainable initiatives here.


Already a Janji Collective member? Log in to unlock access now.

Customer Reviews

Based on 13 reviews
Steven Kasapi
Great running tights

They were a bit tight in first wearing, but after a few runs and washes they’ve relaxed a bit and fit well, true to size. They’re very well-constructed with contours in just the right places. Definitely a keeper.

Jef Groesbeck
They’ve become my fav

Quickly become my favorite shorts… no bunching between the legs, no chafing. In the hottest and most humid weather I may still prefer regular shorts, but for everything else until winter these are what I want to wear. Love the spray dye print. Hoping for more patterns in the future.

Jorge Enrique Gomez / G042708
Bedt shorts for Trail Running!!

I like everything about them!!
Lots of pockets and the lycra Quality is great!!

Richard H.
Comfortable and Cool

These half-tights have been great on long runs during this hot humid summer. They allow me to run chafe-free and store plenty of gels. I'm looking forward to wearing them during my next marathon.

Rusty M
Awesome tights

I wear these great tights during mild to cooler weather and they provide good temperature control, not to mention the awesome fit. The fit allows for plenty of movement without constricting.

Jesse Keenan
These are possibly my favorite running shorts ever

I love the double stretchy pockets, and they fit and feel perfect. I don't know why I waiting this long to try this style of short. I'm done with brief liners and normal shorts!

Best Tight-Shorts for Men!

These are another fantastic design from the wizards at Janji. Plenty of storage to take out on long days, stylish enough to wear for town runs. I’ve taken these into the mountains and carried water, phone, jacket, snacks and keys and still had a pocket to stash my shirt when it got hot. No bounce or sagging to speak of. Thought they would be a bit hot due to the thickness of the material, but they’re actually quite cool in the heat. Drawstring on the outside of the waist band is one of those Janji details that shows how considerate and serious they are about function. Clearly designed by people who use them and seek perfection in their work.

Clever and comfortable Half Tight !!!

So far this is one of my favorite tight for long run. Wow !!! The fabric is brilliant and all the pockets held up very well. Love it !!! This is a keeper for sure.

Jacob Neumann
I initially bought 1 pair

Then I went back and bought 3 more… they’re incredible. I can’t recommend them enough

Eisuke Narita

I will purchase if there is other color for this style