STRVNG Size Guide

The STRVNG fit guide · UK

Find your fit.

Comfort starts with the right fit. Begin with your body measurements, then choose the feel that suits you and your style.

01 / Your starting point

Women’s clothing

Find your STRVNG size using the UK reference and your bust, waist and hip measurements.

Swipe to see all measurements →

Size	UK	US	Bust (cm)	Bust (in)	Waist (cm)	Waist (in)	Hips (cm)	Hips (in)	Inside Leg (cm)	Inside Leg (in)
XS	6–8	2–4	78–84	30.7–33.1	60–66	23.6–26.0	84–90	33.1–35.4	71–73	28.0–28.7
S	8–10	4–6	84–90	33.1–35.4	66–72	26.0–28.3	90–96	35.4–37.8	72–74	28.3–29.1
M	10–12	6–8	90–96	35.4–37.8	72–78	28.3–30.7	96–102	37.8–40.2	73–75	28.7–29.5
L	12–14	8–10	96–102	37.8–40.2	78–84	30.7–33.1	102–108	40.2–42.5	74–76	29.1–29.9
XL	14–16	10–12	102–108	40.2–42.5	84–90	33.1–35.4	108–114	42.5–44.9	75–77	29.5–30.3

These are body-measurement fit ranges, not garment measurements. UK sizes are a starting point; check the style notes below. Inside-leg ranges are retained from our existing guide; individual garment lengths may vary.

02 / Close to you

Sports bras & support tops

Measure around your ribcage directly beneath your bust, with the tape level and comfortably snug. Use your bust measurement above alongside this underbust guide.

Underbust	Recommended Band	Alpha Size
68–73 cm26.8–28.7 in	30–32	XS
73–78 cm28.7–30.7 in	32–34	S
78–83 cm30.7–32.7 in	34–36	M
83–88 cm32.7–34.6 in	36–38	L
88–93 cm34.6–36.6 in	38–40	XL

Band sizes are a guide, not a cup-size fitting system. The right size also depends on the cut of the bra and your bust. Support comes from the individual design; it does not increase with garment size.

03 / The feel you prefer

Fit by style

Sculpt & Front Split Leggings

Your usual size

These styles are true to size. Start with your measurements in the chart above for a close, sculpted fit.

Flow, Flared & Seamless Leggings

Choose your feel

Size down for a closer fit. Choose your usual size if you prefer a more relaxed feel.

Between sizes or choosing a different style? Check its product-page fit notes or ask us before you order.

Compare our leggings →

04 / A moment to measure

How to measure

Use a soft tape measure over underwear or light layers. Stand naturally and keep the tape level, close to your body without pulling it tight.

Bust
Measure around the fullest part of your bust with your arms relaxed.
Waist
Measure around your natural waist, without holding your breath.
Hips
With your feet together, measure around the fullest part of your hips and seat.
Inside leg
Measure from the top of your inner thigh to your ankle bone.

Body measurement guide showing bust, waist, hips and inside leg

International size reference

Use this as a reference only. International labels vary; your measurements and the style-specific guidance are the better starting point.

UK	US	EU	AUS	JP	CN
6	2	34	6	5	XS
8	4	36	8	7	S
10	6	38	10	9	M
12	8	40	12	11	L
14	10	42	14	13	XL

A little personal guidance.

Tell us the style you’re considering and your height, bust, waist and hip measurements. We’ll help you compare them with our guide so you can choose with more confidence.

Email us for fit help →Contact STRVNG Returns & refunds