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Groundwork Tight

Regular price €75,95
Unit price  per 

Groundwork Tight

M's Groundwork Tight

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


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William wears size M and is 6'1" Formfitting, 28" inseam, 
Size Chart

For longer runs through colder weather and shorter days, the Groundwork Tights have you covered with targeted extra protection, hi-vis reflective seams, and generous pockets to carry your all-day running essentials. Read more

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

Won't sag out
Durable nylon stretches with you and retains its shape while resisting odors

Won't fall down
A redesigned waistband with internal drawcord stays snug + comfortable

Extra support
Double-lined fabric in the front panel (from hip through thigh) for added protection + warmth

Pocket it
Double-tiered side pockets can stow a phone, hat, gloves + nutrition

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

Versatile storage
Dual-entry stretch pocket in the back can store nutrition or double as a pass-through for a shirt or light shell

Zipperless ankle design
Articulated ankle shaping and a laser cut hem allow easy on/off + adaptable wearability to roll up the tight when warm

Stay seen
Integrated hi-vis reflective tape along the side seams along with Janji signature blue reflective logo and “watermark” on back increases visibility in low light

materials + specs

Groundwork Knit
68% nylon, 32% spandex

243g / 8.6oz (M’s Medium)

Garment made in Vietnam

Fabric Callout


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



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.

Customer Reviews

Based on 55 reviews
Rob Jones

5’10”, 160#, male. Fits right. Not to loose, not to tight. It would be nice to see these tights in some sort of pattern, helps obscure any parts you want obscured.

Cameron Keller
Best tights I own

I bought these in the summer, so I haven’t had a chance to run in them yet but just putting them on the first time, I can tell they’re the best tights I own. Great compression, fantastic pockets and storage and the high-vis details are very well thought out. I can’t wait until it gets cold enough to run in them.

Chris Casey
Pretty good

I liked these enough to buy another pair- first in large and then in medium. The large is a skosh too big in the inseam and waist and a medium is good in the waist but on the short side for the ankles for my body. I’m 6”2” with an average runner body type. I like and wear them both. Material is very supple and stretchy though, so if you’re between sizes, size down if you like that “second skin” kind of feeling. Great pockets, and I just love that I can find quality tights in a color besides boring black with Janji! Moar colors!!

Steven Torres
Love them please make more colors

Very comfortable and supportive . I use them for hiking , jogging and indoor cycling . They are very comfortable and don’t show anything. I wear them around town. I have gotten many compliments for people . I would like to see more colors like red and bright blue .

BJ Gibb

Without question, these are the most comfortable and well designed running tights I've had. In terms of material, they feel pleasantly more substantial than I thought they would - definitely going to be in regular use for any run below 10 Celcius. They feel 'designed', as if cut to correctly fit the male anatomy - you know how sometimes with a pair of running tights, it's like your body is trying to squeeze them off again so you need to tie the waist band to stop them ending down at your knees? Not these - it's like they've been tailored to snugly fit. I didn't even tie the substantial waistband before the run, they simply sat on my hips (I'm 5ft 8in, waist usually 30in, so I bought Medium). Then there's the storage options - symmetrical, abundant, secure pockets. I could be wrong but I count six - six! I managed to get these in a sale but honestly, if I'd paid shy of a hundred I'd still be pleased.


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