How Should Trousers Fit? Waist, Seat and Shape

The waist should hold the trousers up on its own

Trousers that fit right are held up by the waist itself – not by the belt. They should sit where you're naturally narrowest, usually just above the hip bone, and lie close without straining or spilling over the top. The test is simple: with the trousers fastened, the waistband should take two fingers – or a flat hand against the band – inside it, no more and no less.

• No gap standing away at the back of the waistband when you stand straight – that gap means the waist should be taken in.
• No tight wrinkles or overhang above the band – that means the waist is too tight.
• The belt should be for style and fine-tuning, not the thing stopping the trousers from sliding down.

The rise determines comfort

The rise – the distance from the crotch seam up to the waistband – is the fit people most often overlook, but it determines much of the comfort. Too low a rise pulls at the crotch and slips down when you sit; too high bunches and folds at the front. Sit down and check: there should be no pulling or pinching at the crotch, and the trousers shouldn't gape at the back. The rise is hard to change afterwards, so this is the dimension to buy right from the start.

The seat should lie smooth

Over the seat the fabric should lie smooth and follow the shape without being stretched taut. If you see U-shaped 'smile' wrinkles just under the seat, the trousers are too tight there and pulling – a common sign that's easy to recognise. If instead the fabric hangs loose and pools with excess cloth under the seat, they're too wide. A tailor can adjust the seat and crotch either way, within the seam allowance available.

Thigh and shape down the leg

Through the thigh there should be enough room to move, but not so much that the fabric hangs. A quick test: pinch the fabric on the outside of the thigh – a small pinch to hold means the width is good; nothing means too tight; a fistful means too wide. Down the leg it should taper evenly to an opening that frames the shoe without collecting in large folds. Both the thigh width and the shape down the leg can be tapered by a tailor if the trousers are too full or wide.

When the trousers need a tailor

You can judge much of the fit yourself, but most trousers need a small adjustment to sit just right – and that's exactly what alteration is for. A tailor can take in or let out the waist, adjust the seat, taper the legs and take up the length, so a standard pair follows your body. If you're unsure what to change, you can send the trousers to us – we tailor across Norway according to the garment's fabric and cut. You order online, and you see the price before you order.

Frequently asked questions