






Sienna MELYRFLEX Slim leg Stretch Trouser - Black
Color:
BlackEstimated Delivery Time
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The MELYR Sienna in black is a women's high-waist slim cigarette-leg stretch trouser featuring the MELYRFLEX™ waistband and a faux waistband detail. Made from a premium 4-way stretch fabric, 60% polyester, 33% viscose, 7% elastane. Machine washable and crease-resistant. UK sizes 8–22. Leg length 70cm with a 4cm hem for lengthening.
Seven in the morning. Before the coffee. The moment your clothes either help or don't.
The Sienna helps.
A slim cigarette-leg cut in our 4-way stretch fabric — structured enough to look like tailoring, flexible enough to mean it. The hidden MELYRFLEX™ waistband holds with a supportive, even pressure that doesn't dig after lunch, doesn't shift when you sit down, and doesn't require your attention for the rest of the day. The faux waistband above it creates a clean mid-hip break — sharp enough for French tucks, neat knitwear, or a tucked blouse.
Put them on. Walk out. Stop thinking about your trousers.
Wear with Aimee Navy or Aimee Black for your most reliable working week outfit. With a white blouse for something sharper. With the Harper knit for effortless weekend dressing.
60% polyester, 33% viscose, 7% elastane. Machine washable at 30°. Crease-resistant. UK sizes 8–22.
Size guidance: Measure your fullest hip — that's where fit starts. The MELYRFLEX™ band adapts to your waist. Leg length is 70cm with a 7cm hem for lengthening if needed. Models wear sizes 10, 14 and 20.
Product FAQ
What is MELYRFLEX™ and how does it work?
MELYRFLEX™ is MELYR's patented waistband construction. Unlike a conventional elasticated waistband that applies uniform compression, MELYRFLEX™ uses a four-way stretch panel that provides controlled hold — supportive but not restrictive. It adapts to your body as you move and sit rather than digging in or loosening over the course of a day. The faux waistband panel above it means it looks like conventional tailoring from the outside.
Do the Sienna trousers look like smart work trousers or stretch trousers?
Smart trousers. The cigarette-leg cut and the quality of the fabric — which looks and moves like a fine wool — read as proper workwear at any distance. Customers regularly wear them for board meetings and client presentations.
Will they still feel comfortable at the end of a full working day?
Yes. This is the most consistent thing customers report. The MELYRFLEX™ waistband is specifically designed not to tighten or dig after prolonged sitting.
Do they crease if worn to the office or packed for travel?
The fabric is crease-resistant and travels well. Multiple customers mention packing them in a case and wearing them directly from unpacking.
How do I choose my size?
Measure your fullest hip. Don't go by your usual trouser size — different brands cut differently and the hip is where this trouser fits. The MELYRFLEX™ waistband takes care of the waist fit.
Can I get the hem lengthened?
Yes. There's a 7cm hem reserve built in for exactly this reason. A tailor can lengthen them if you need additional length.
Choose options







Color:
Black- MELYRFLEX band
- Faux waistband
- Premium stretch fabric looks and feels like the finest wool
- Ultimate stretch work trouser
- Machine washable
View Size Chart
Fabric
60% Polyester, 33% Viscose, 7% Elastane
Washing Instructions
To prolong the life of your Melyr slim leg trousers, we recommend hand washing. For the time-strapped, they are machine washable at 30 degrees. Natural drying is recommended.
ROYAL MAIL TRACKED 48 (UK DELIVERY) – £5.99
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Transit time 1 – 2 working days
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Transit time Next Working day before 1pm guaranteed
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Transit time 3 – 5 working days
Local taxes & duties may apply. You will be contacted directly by customs for payment before receipt of your order.
Frequently Asked Questions
Find Your Perfect Fit
To help you find the best fit, here are the key measurements we recommend:
- Bust: Measure around the fullest part of your chest.
- Waist: Measure around the narrowest part of your waist.
- Hips: Measure around the widest part of your hips.
- Inseam (for trousers): Measure from your inner thigh to the top of your foot.
Compare these measurements to our size guide to find your perfect fit.
If you are unsure what size to buy and require some assistance, please contact hello@melyr.co.uk and one of our team will help guide you.
Here's the Magic

FREE YOUR WAIST
Our signature 4-way stretch MELYRFLEX band is designed to banish unforgiving, restrictive waistbands. Gym wear comfort meets contemporary tailoring in this expertly-cut slim cigarette-style trouser, a true hero essential.

Faux waistband
Our meticulously designed faux waistband sits just below MELYRFLEX at the widest hip point creating a flawless fusion of comfort and style with multiple styling options.

Premium fabric
Our high waisted trousers are crafted from game-changing, 4-way stretch woven fabric that looks and feels like wool. Elasticated trousers never felt this good. Stylish, butsmart workwear and weekend dressing dressing. Machine washable for wear-on-repeat hardworking wardrobes.

Ankle grazing length
Extra deep hems for ease of alteration.
Designed to fall just above the ankle, flattering the narrowest point of the leg.
Works perfectly as full-length cigarette style trousers for petites.











