Undies – Unisex Shorts

Selected: Undies – Unisex Shorts Shorties - Shapewear Undies – Unisex Shorts Vesties - Mic Vest

Colour: Beige

Size: Small Small Medium Large

URSA Undies are a smart, lightweight alternative to traditional Straps and Belts. Created to solve challenging transmitter placement needs under tight wardrobe. Made from soft jersey Lycra that feels like regular underwear with stretch (but not compression like URSA Shorties) meaning performers stay comfortable while packs stay secure.

🩳 Unisex Lightweight Design

Worn like regular underwear with a soft, breathable feel.
Created for Film & Theatre where secure, non-slip rigging under wardrobe is essential.

🔁 Infinity Loop Waistband

A continuous sideways rigging loop around the waist lets you place a transmitter anywhere along the band for optimal concealment.

🦵 Multiple Leg Placement Options

Two Thigh Loops: Allow sideways rigging around either thigh — front, side or back — depending on comfort and costume.
Two Inner Leg Popper Pouches: Vertical pouches with popper closures let you secure a transmitter on the inner leg (up or down orientation).

🔌 Cable Access & Management

Thoughtfully placed access holes on both thigh loops make routing mic cables easier and keep them out of sight.

👖 Works Under Shorts, Trousers & Tight Costumes

Designed to sit no higher than the trouser line and address common wardrobe problems, making transmitters fully hidden with minimal bulk.

📡 Universal Transmitter Compatibility

URSA Undies support a wide range of wireless transmitters, though they’re best suited for small to medium‑sized packs like the Wisycom MTP61, Lectro SMB or Sound Devices A20Mini.

📏 Size & Fit Guide

URSA Undies are available in three unisex sizes:

Size	EU	US	UK
Small	32–36	1–4	4–8
Medium	38–42	6–10	10–14
Large	44–48	12–16	16–20

In Stock

£38.40 GBP

£32.00 ex VAT. Free Shipping on orders over £50.

Selected: Undies – Unisex Shorts / Beige / Small

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Undies Features & Benefits

Versatile Transmitter Positioning

Choose your perfect fit with three flexible options - secure Waist Loop, comfortable Thigh Loop, or discrete Thigh Pouch for ultimate versatility in any situation.

Streamlined Comfort Options

Experience the lightweight freedom of our URSA Undies, designed as a sleek alternative to our beloved Shorties collection for those seeking minimal profile with maximum comfort.

Unique Infinity Waist Loop

Our revolutionary sideways infinity waist loop lets you position your transmitter exactly where you need it, creating the perfect balance of comfort and concealment.

Intelligent Cable Management

Navigate mic cables effortlessly through our thoughtfully designed access holes on both leg loops, ensuring tangle-free performance and minimizing cable visibility for a professional appearance.

Two Inner Leg Pouches

These two Pouches with secure Poppers have access holes at the top which allow the transmitter to be rigged pointing up or down.

Two Thigh Loops

Quickly move your TX from the back to the front of the thigh to find the best position for your specific needs and comfort.

Great for Hiding Under Shorts

Perfect for summer shoots or performances, our low-profile design ensures your transmitter remains completely hidden even under shorter clothing.

Hides Under Trousers

We designed Undies to ride up no higher than the trouser line, ensuring a completely seamless look that won't reveal your transmitters or receivers.

Fits Some Larger Transmitters

While designed for small & light transmitters, the Undies can also support Medium sized transmitters.

Comfort-First Design Details

All-day comfort with our screen-printed sizing labels that eliminate irritation. Available in three sizes and two colours.

Product Specifications

Find your perfect fit with our comprehensive size guide

Size

EU Size

US Size

UK Size

Small

EU Size 32-36

US Size 1-4

UK Size 4-8

Medium

EU Size 38-42

US Size 6-10

UK Size 10-14

Large

EU Size 44-48

US Size 12-16

UK Size 16-20

💡Sizing Tip: If you're between sizes, we recommend choosing the larger size for a more comfortable fit.

📏All measurements are approximate. For the best fit, please take your measurements and compare them to the size chart.

Universal Pouch Transmitter Compatibility

Wisycom

MTP40/41, MTP60/61, MPR50 IEM

Sound Devices

A20/10, A20 Mini

Shure

ADX1M, ADX1, AD1, SLXD1, QLXD1, ULX, AXT, GLX, PSM1000, UR1M

Sennheiser

G3/G4, SK 5212/6212/2000/9000/500, EW-D SK

Sony

UWP-D, DWZ, DWT-B03R, DWT-B30

Zaxcom

ZMT4/T4X, TRX LA5

Lectrosonics

SMV, SMQV, SSM, M2 Duet, BDU, DSSM, DCHR, WM, LT, LMb

Deity

Theos

Tascam

DR-10L

QSX

PlayerMic S

Testimonials

On one show I tried them out on, our female lead was often wearing Spanx undergarments when dressed in short skirts and dresses. I showed the Undies to our costume team, and they were very excited to see all of the different transmitter pocket options for those times we have difficult costumes. After wearing the Ursa Undies with a transmitter in the side thigh pouch, she said she completely forgot that she was wearing a transmitter at all and that the Undies were very comfortable. I also feel confident that I could hand off a lav mic, transmitter, and a pair of the Ursa Undies to the costume team to wire talent for those times that an actor would prefer a costumer to help them get wired

Julian Andrews Production Sound Mixer

Working with the costume department is key to getting good audio and there are always challenges. The black medium Undies helped us have conversations and offer solutions that were very gratefully received. This then also helps with other negotiations, as rather than presenting problems we were seen as a dependent able to offer new ideas and ways of working.

Simon Paul Hornett AMPS, IPS Production Sound Mixer

Featured Product Video

URSA Undies - One Garment. Multiple Pack Positions

URSA Undies are lightweight, unisex garments with multiple transmitter pouches for discreet rigging under costumes. Made from soft, stretchy Lycra with an Infinity Loop Waistband and various placement options. Available in Black and Beige, sizes S-L.

FAQs

Undies have built‑in loops and popper pouches designed specifically for wireless transmitter placement, unlike regular underwear which cannot secure packs or route cables.

Large or wider transmitters — especially thick packs like some Sennheiser G4 bodies — may not fit comfortably. Undies are best suited for smaller or medium transmitters; for larger units consider URSA Shorties instead.

Yes — Undies can be worn back to front, as they are a symmetrical design (labels indicate the intended back).

Yes — Undies are often used to wire children comfortably, offering an easier and more unobtrusive rig than straps that can ride up the waist.

Yes — the jersey Lycra fabric is lightweight, breathable, and comfortable like regular underwear, and does not compress like shapewear.

Yes — URSA Undies are machine washable (recommended at 40–60 °C) and can be dried on low heat or hang‑dried.

We have a ‘no quibble’ policy for refunds at URSA. If you are unhappy we will do everything we can to replace, fix or refund. For more details on returns please visit this page: "Refund Policy"

All URSA products are shipped from our base in the United Kingdom. If you spend over £50 for UK, 75€ for Europe, 150$ for USA on your order we will provide a free shipping option. For international shipping we use Royal Mail International Tracked, FedEx Regional Economy & FedEx International Priority among others depending on your location. For more information please check out our Shipping Policy