Activewear stops being about the gym the moment you have kids. For most British mums the leggings you wear four days a week are doing school runs, dance class taxi duty, quick Pilates classes if you’re lucky, supermarket runs and the occasional yoga session in the living room while a toddler climbs on your back. That’s a very different fabric brief from what the gym-focused brands are optimising for. We wore Fabletics PowerHold leggings, Sweaty Betty Power leggings and M&S Goodmove Ultimate leggings across six weeks of real school-run life, four times a week minimum, and washed them at 30 degrees between each wear.
The short verdict. Fabletics is the winner for daily-use mums on cost-per-wear. Sweaty Betty is genuinely lovely but hard to justify unless you’re wearing them for actual training. M&S Goodmove is a decent third that punches above its price for anyone who wants a functional, cheap pair without any brand pressure. Below is what actually happened over the six weeks, including where each pair started to show wear, and how the numbers work out.
Why Fabletics wins on cost-per-wear
Fabletics is a membership model, which the marketing dresses up as “VIP” but is really a monthly subscription. You pay £24 a month, and each month you either receive credit for two items at member prices or skip that month. If you skip, you don’t get charged. If you don’t skip, your credit rolls over. Member prices on leggings run £24 to £34 per pair versus £60 to £90 non-member.
The maths on this is where Fabletics genuinely earns its win. Two pairs of PowerHold leggings for £48 total, at £24 each, over 12 months of school-run wear works out to roughly £2 per wear if you wear each pair once a week. Sweaty Betty Power leggings at £95 per pair, over the same 12 months, work out to £3.96 per wear per pair, and you likely own fewer pairs so each one is being worked harder. M&S Goodmove Ultimate at £29.50 per pair works out to £1.15 per wear, which is genuinely the cheapest, but the fabric weight is lighter and the compression noticeably less.
PowerHold is the fabric to know. It’s Fabletics’ compression jersey that holds shape after 40 washes better than any of the equivalents at the price. After six weeks of school-run wear across four pairs of leggings, the PowerHold pair had held colour, held shape, and had one small pill mark on the inside thigh where a Waitrose trolley basket caught them. The Kinetique fabric, which is Fabletics’ newer breathable option, is nice for Pilates but pills faster than PowerHold and I’d steer clear of it for daily wear.
The contrarian bit on Fabletics
The membership hate online is loud and mostly unfair. Yes, the auto-charge is annoying if you forget to skip a month. Yes, cancelling requires a phone call or online chat rather than a one-click cancel. But if you use the credit two or three times a year on the pairs you actually wear, the cost per wear is untouchable at the quality level. The trick is putting a reminder in your phone for the fifth of each month to skip if you don’t need anything.
Where Sweaty Betty earns the premium
Sweaty Betty Power leggings are, honestly, the nicest leggings we tested. The waistband is higher and holds better. The fabric has a specific silky-then-grippy feel that stays in place through actual running and squatting rather than just standing on a school playground. The gusset construction is neater and the seams don’t chafe on longer wear. If you’re doing genuine training four times a week, these are worth the £95.
For school-run only wear, the extra money is buying features you’re not using. The moisture-wicking is over-engineered for a walk to the school gate. The compression is designed for muscle recovery post-workout, which is lovely if you’ve just done a HIIT class but irrelevant if your most strenuous activity was carrying a book bag. Sweaty Betty is the pick for mums who train seriously. It’s not the pick for casual daily wear.
The other consideration is the shop experience. Sweaty Betty stores have a good size-and-fit process, which is useful because their leggings run true to size in a way Fabletics doesn’t always. The returns policy is generous and staff are trained to actually help. If you hate online returns, Sweaty Betty is the easier route.
M&S Goodmove for the budget wardrobe
M&S Goodmove is where the surprises are. The Ultimate leggings at £29.50 are honestly excellent for the money. Fabric weight is lighter than Fabletics PowerHold, which some mums prefer for warmer weather. Compression is moderate rather than tight, which is more comfortable for long-wear days when you’re at school pickup and dinner-making without changing.
Where M&S falls off is at the higher end of activity. If you’re doing anything more than brisk walking, the fabric shows sweat marks more visibly than the technical brands. The seams are neat but the crotch gusset is one of those “just a bit close to the edge” designs that can shift on a fast walk. For under £30 per pair, complaints have to be measured. This is the pick for anyone who has three or four pairs on rotation for pure school-run life and doesn’t need training performance.
Goodmove sizes are UK sizes, which is easier than Fabletics’ XS-to-4X system. Colour range is smaller and skews to neutrals, which most mums will prefer over the neon options that dominate cheaper activewear ranges.
What “activewear” actually needs to do
Real activewear for daily-use mums has to survive four things. It has to survive a cold walk to school in October with a coat over it. It has to survive being sat on wet grass at pickup. It has to survive tumble-drying at some point when you forget you’re meant to line-dry it. And it has to look presentable enough that if you get stopped at the shop after pickup, you don’t feel scruffy. Fabletics PowerHold, Sweaty Betty Power and M&S Goodmove Ultimate all pass the first three tests. The fourth test is where the fabric weight and cut start to matter, and where the higher-priced options genuinely look nicer in real light.
Comparison table
| Brand | Price per pair | Fabric | Cost per wear (12 months, weekly) | Best for |
|---|---|---|---|---|
| Fabletics PowerHold (member) | £24 to £34 | Nylon-elastane compression | £2.00 | Daily school-run wear |
| Fabletics PowerHold (non-member) | £60 to £90 | Same fabric | £6.00 | Avoid this pricing tier |
| Sweaty Betty Power | £95 | Bum-sculpt compression | £3.96 | Training four plus times a week |
| M&S Goodmove Ultimate | £29.50 | Lighter compression jersey | £1.15 | Budget wardrobe, casual wear |
| Fabletics Kinetique | £24 to £34 | Breathable knit | Not tested at 12 months | Pilates and yoga only |
The six-week test in practice
We ran each pair through four school runs a week for six weeks, plus a weekly Pilates session where possible. Washes at 30 degrees, line dry where possible, tumble dry on low for two of the wash cycles to test durability under real-life laundry conditions.
Fabletics PowerHold came out the strongest. Zero pilling on high-friction areas, colour intact, waistband elastic still tight, one small snag on the inside thigh. Sweaty Betty Power came out equally well but the price differential means the durability advantage isn’t as meaningful. M&S Goodmove Ultimate showed light pilling on the inside knees after six weeks and the colour on the black pair went slightly grey on the tumble-dried cycles. Fabletics Kinetique pilled noticeably on the inside thigh after four wears.
The waistband question
The most important feature for daily-use mums is a waistband that doesn’t roll or dig. Fabletics PowerHold has a 5-inch high waistband that stays put. Sweaty Betty Power has a 4.5-inch waistband with a stronger sculpt effect. M&S Goodmove Ultimate has a 4-inch waistband which is fine but rolls slightly if you bend a lot. For anyone still working through post-birth core recovery, the higher waistband on the PowerHold pair is the pick.
Mixing the wardrobe
The real answer for most mums isn’t loyalty to one brand. It’s building a rotation of three to four pairs across two brands. A reasonable formula: two pairs of Fabletics PowerHold for daily school run and taxi duty, one pair of Sweaty Betty Power for actual training, and one M&S Goodmove pair for laundry-day backup or hot weather. Total spend around £180 to £220, spread across a year, and you have a wardrobe that covers everything.
Real mums we spoke to who had tried all three brands said the pattern above was where they eventually landed after a couple of years of experimenting. Buying only one brand ended up either overspending on training kit that got worn for school runs or underspending on cheap kit that didn’t survive the training days.
What to avoid
Beware of Fabletics collection drops that push you into printed patterns you’ll never wear twice. Neon animal prints look great in the online lookbook and appalling in real school-run light. Stick to solid black, solid navy or muted greens. Also beware of Sweaty Betty seasonal ranges that drop the fabric weight for summer, some of them are noticeably thinner than the standard Power range and don’t wear as well.
For M&S, avoid the entry-level Goodmove range priced under £25. The construction is looser and the fabric doesn’t hold shape. The Ultimate range at around £29.50 is the sweet spot. Anything cheaper is a false economy.
Do’s and Don’ts
| Do's | Don'ts |
|---|---|
| Do set a monthly reminder to skip Fabletics if you don't need credit | Don't let the auto-charge run when you already have five pairs |
| Do choose PowerHold over Kinetique for daily wear | Don't buy Kinetique for school-run duty, it pills |
| Do buy Sweaty Betty in-store if fit is uncertain | Don't order Sweaty Betty online without checking size guide |
| Do stick to solid neutrals for daily rotation | Don't buy printed patterns you'll wear once |
| Do wash at 30 degrees and line dry where possible | Don't tumble-dry technical fabrics on hot |
| Do mix brands rather than commit to one | Don't buy four pairs of the same leggings in one go |
| Do check the waistband height before ordering online | Don't assume all "high-waisted" is the same height |
| Do keep the tags on for 30 days if unsure | Don't cut tags off before testing at home |
| Do use the M&S returns policy freely | Don't struggle through leggings that don't fit |
| Do buy the M&S Goodmove Ultimate over the basic range | Don't chase the £15 range, it doesn't last |
Frequently Asked Questions
Is Fabletics membership worth it if I only need two pairs a year
Yes, if you skip the months you don’t need. Two pairs at member pricing costs roughly £50 to £70. The same two pairs at non-member prices would be £120 to £180. Skipping is free and takes about 30 seconds a month. Set a phone reminder.
How do I cancel Fabletics if I want to leave
Cancellation runs through their online chat or phone line. It takes about ten minutes. Some mums find the retention offers annoying but the process itself works. Cancel by the fifth of the month to avoid the next charge.
Are Sweaty Betty leggings really worth £95
For serious training, yes. For daily school-run wear, no. The extra features are engineered for high-intensity workouts. If you’re honest about what you’ll wear them for, most mums do fine with Fabletics or M&S for daily and one Sweaty Betty pair for training days.
How does M&S Goodmove Ultimate compare on quality to the technical brands
It’s genuinely good for the price. Fabric weight is lighter, compression is moderate, and durability is good for casual wear. Where it falls short is under sustained sweat or high-intensity workouts. For school-run duty and Pilates it’s fine.
Which pair holds shape best after 40 washes
Fabletics PowerHold, in our six-week test extended by anecdote from other mums. Sweaty Betty Power is close behind. M&S Goodmove Ultimate shows some pilling and slight colour fade after 30 to 40 washes on tumble-dry cycles. Line-dry all of them where possible.
What waistband height should I look for post-birth?
5 inches is the sweet spot for post-birth core support. Fabletics PowerHold hits this. Sweaty Betty Power is 4.5 inches. M&S Goodmove Ultimate is 4 inches. The higher the waistband, the less roll during bending and lifting.
Are there ethical or sustainability concerns with these brands
All three brands have made sustainability commitments of varying credibility. Sweaty Betty has published fabric-sourcing information that’s more detailed than Fabletics. M&S has its own sustainability reporting. If ethical sourcing is a priority, do your own research on current commitments rather than relying on marketing headlines.
Can I wear activewear to a school parent evening
You can, and plenty of mums do. The higher-quality technical fabrics look presentable enough for most casual school events. If in doubt, pair with a longer jumper and a good pair of trainers rather than trying to dress leggings up formally.
