Warning: That Ache Between Your Shoulder Blades Isn't Your Age — It's Your Bra

The bra trade has a habit it never owns up to. It builds a heavy-bust bra on a thin elastic band, then tells you the band does the lifting.

It doesn't. On a DD to G cup, the weight in front pulls that band forward. It creeps up your back. Do the mirror check. Stand with your back to the mirror and look over your shoulder. If the band sits higher at the back than the front, it has climbed right between your shoulder blades.

Once it climbs, the bust swings forward. The muscles between your shoulder blades take the load and hold it all day. That knot is those muscles doing your bra's job.

Seven in ten ShapeChic orders are an L or bigger. Most of those women have worn a thin band like that for 40 years. It was never your age.

Every year the band loses a bit more grip and rides a bit higher. So the ache doesn't stay put. It settles in.

Margaret tried what everyone tries. A new mattress. A supermarket wireless bra. A 'comfort' bra with softer cups. 'I bought the M&S one, then one from the catalogue, then three off the internet,' she said. 'I had a drawer full. Every one ended up in the same place on my back.'

It wasn't her. Wire or no wire, every one sat on the same thin strip, and a thin strip climbs.

One in five women in ShapeChic's orders wears an XXL or bigger, so that strip carries even more. By the end, Margaret sat with a heat pad on the sofa most days. 'I thought that was just being 64,' she said.

The fix starts at the back, where every other bra cuts corners.

The ShapeChic Original Bra has no thin band. The whole back is one smooth, wide panel. It sits low and flat and scoops across your back. There's nothing to ride up, so the weight spreads across the whole back instead of hanging off one strip.

The straps are about 5 cm wide, solid soft fabric, no lace. They sit flat on top of the shoulder, so there's no more digging. No underwire pushes on your ribs. No hooks press into your spine. It pulls on over your head.

No wire. No hooks. No thin band to climb. The muscles between her shoulder blades stop doing the bra's job. You can tell your sister in one sentence: the back is wide, so nothing climbs.

Margaret ordered it after Claire sent her the link. It came in the post that week. She pulled it on over her head and stood with her back to the same mirror.

'The band wasn't there. There was nothing to ride up,' she said. 'The whole back was flat against me.'

Within days the knot started to fade. 'I stopped reaching for the door frame.' Then she said the line every woman in this story says. 'I didn't know it was the bra.'

Her neighbour Jean watched her carry the shopping in from the car. 'She said, you're standing different,' Margaret said. She hadn't changed her back. She'd changed her bra.

One honest warning. It fits snug on purpose, so that wide back stays low. Don't guess your size. Use the size guide on the next page. It already allows for the snug fit.

We spoke to women who made the same switch. Their stories matched, line for line.

Pauline Rigby, 67, a retired postwoman from Wigan: 'Forty years of thin straps. No new grooves on my shoulders, and the knot's gone.'

Linda Marsh, 61, a care assistant from Carlisle, on her feet all shift: 'I'm lifting and bending all day. The back of it doesn't shift, so my back doesn't ache.'

Hilary Dunn, 69, from Truro: 'I paid twice as much for a fitted one from a department store. The band rode up just the same. This one stays down.'

Ask them what surprised them and you hear the same four words. 'It was the bra.' Not their age. Not the mattress. The bra.

Here is the offer as it stands. Buy 1, Get 2 Free. That's three bras for the price of one, with free delivery.

Three is the right number. One on, one in the wash, one in the drawer. Every bra you own gets the wide back, so there's never a day you pull the old thin band back on and feel the knot return.

Sizes run from S to 4XL in seven colours, including black, beige, white and navy. It fits snug, so use the size guide on the next page. It already allows for the fit.

You also get a 30-day money-back guarantee, on top of your normal rights. The only thing you risk is another month of the knot.

Margaret wears one most days now. The heat pad is back in the cupboard. She kneels at the veg patch. She picks up her granddaughter Evie. She hoovers the stairs in one go.

'I still do the mirror check, just to see,' she said. 'The back sits low and flat. And the ache isn't there.'

The ShapeChic Original Bra won't change your age. It will change what your upper back has to carry. Take the weight off, and the knot lets go.

You've held that weight up with the wrong muscles for 40 years. You deserve to feel like a queen in your own garden. This is how you start.