Ultimate Seamless Mid Rise Brief Underwear
Pickup available at High Street (Downtown Edmonton)
Usually ready in 24 hours
Same seamless brief format as the High Rise, without the waistband that shows above your jeans. The Katie Em Ultimate Seamless Mid Rise Brief sits below the natural waist — the right choice for low-rise denim, hip-hugging skirts, or anything where a high-rise waistband would create a line or peek out. 85% Polyester / 15% Elastane with a 100% cotton gusset, no visible panty lines, no rolling, no digging. Gentle smoothing through the hip and seat. The mid-rise version of the underwear you stock up on when you find one that works.
Available in six colours: Black, Nude, Peachy Nude, Stone Blue, Nordic Blue, and Plum Wine. SM through XL. Final sale — standard practice for all underwear. If you prefer a waistband that sits at the natural waist, the Katie Em Ultimate High Rise Seamless Brief is also available at Cloud Nine.
About Katie Em Undies
Katie Em Undies is a Canadian brand making seamless underwear and bras for real daily wear. The mid-rise brief is the lower-sitting version of their core seamless range — the same quality and construction, positioned for different wardrobe needs.
The Details
- Brand: Katie Em Undies | Canadian brand
- Style: Ultimate Seamless Mid Rise Brief
- Rise: Mid rise — sits below the natural waist
- Construction: Seamless — no visible panty lines
- Fabric: 85% Polyester · 15% Elastane body · 100% Cotton gusset
- Features: Gentle hip and seat smoothing · No rolling or bunching · Breathable cotton gusset
- Colours (in stock): Black · Nude · Peachy Nude · Stone Blue · Nordic Blue · Plum Wine
- Sizing: SM · MD · LG · XL
- Fit note: Fabric relaxes slightly with wear — size down if between sizes
- Sale policy: All underwear is FINAL SALE — no returns or exchanges
- Also available: Katie Em Ultimate High Rise Seamless Brief ($19.99) — sits at the natural waist
- Available at: Cloud Nine Pajamas — three Edmonton locations and worldwide shipping online
Size Guide
| Size | CA Size | Hip |
|---|---|---|
| SM | 4–6 | 35–37" |
| MD | 8–10 | 38–40" |
| LG | 12–14 | 41–43" |
| XL | 16 | 44–46" |
Good to Know
Mid rise vs. High Rise — which one?
Rise preference is personal and wardrobe-dependent. Mid rise sits below the natural waist and works with low-rise bottoms, hip-huggers, and anything where a high waistband would be visible. High rise sits at the natural waist and is the better choice under high-waisted trousers, skirts, and anything that benefits from waist coverage and smoothing through the midsection. Same seamless construction, same price, different positioning. Both available at Cloud Nine.
What's the cotton gusset for?
Breathability and hygiene. The cotton gusset keeps the area most in contact with skin natural-fibre rather than synthetic, which matters for comfort and health during extended daily wear. It's the detail that separates a well-made seamless brief from a basic one.
Is this actually invisible under clothes?
Yes — the seamless edges and stretch fabric mean no panty lines under fitted trousers, bodycon styles, or fine knits. Nude and Peachy Nude are the most versatile for lighter fabrics; Black under dark clothes; Nordic Blue, Stone Blue, and Plum Wine under heavier or opaque layers.
Why final sale?
Standard hygiene policy for all underwear — no returns or exchanges regardless of condition. Check the size guide carefully before ordering and size down if between sizes.
Katie Em size guide
Seamless, second-skin comfort in sizes Small to Extra Large. From a fellow Canadian small business, these pieces are soft, smooth under everything, and so comfortable you'll forget you're wearing them (the best compliment a bra can get).
Our fit tip: Katie Em is made with 85% polyester and 15% elastane, so it gently relaxes and moulds to you with wear. If you're between sizes, always size down. It'll feel snug for the first few wears, then settle into a fit that stays supportive and smooth for the long haul.
Bras
Find your usual band size along the top and your cup size down the side. Where they meet is your Katie Em size.
- Small
- Medium
- Large
- Extra Large
| Cup | 30 | 32 | 34 | 36 | 38 | 40–42 |
|---|---|---|---|---|---|---|
| A | S | S | S | M | L | XL |
| B | S | S | S | M | L | XL |
| C | S | S | M | M | L | XL |
| D | S | M | M | M | L | XL |
| E | S | M | M | L | L | XL |
| F | S | L | L | L | XL | XL |
Swipe sideways to see the full chart on your phone.
Underwear
Match your usual clothing size to find your fit.
| Katie Em size | Your usual size |
|---|---|
| Small | 4–6 |
| Medium | 8–10 |
| Large | 12–14 |
| Extra Large | 16–18 |
Still not sure?
We're real people who talk about fit all day long, and we love it. Pop into any of our three Edmonton-area shops or send us a note, and we'll help you find your perfect size.