A lot of thought and research has gone into the fit of our tops, including in depth sizing research, brand comparisons and wearer trials. Although you should aim to order your normal size you may find our garments are a little on the generous side compared to other brands.

If you are between sizes, size down rather than up.

We currently have two length options for the tops and three legging lengths to choose from. We hope to expand on the length options soon.

Size and fit of our tops

All of our tops have been carefully designed, to ensure they are flattering to the female form whilst maintaining a modest and comfortable fit. These tops should skim the form, leaving comfortable ease, particularly around the waist. Perfect to throw on for a coffee with a friend, for a light yoga session or simply to walk the dog!



REGULAR – This length has been created for those of average height or body length, it has a moderate coverage of the hips and bottom, but the side slits still allow for ease of movement. On those with a longer body length, this style will have a more traditional t-shirt length.

Example size 12 length is 70cms from side neck opening to hem.

LONG – Here at Red Jasper, we like to ensure we are catering for the taller ladies, which is why we have developed tops with a longer length. The long length is also suitable if you have a long torso or If you are of average height this style is still appropriate if you prefer  more of a tunic length.

Example size 12 length is 75cms from side neck opening to hem.


Size and fit of our leggings

All of our leggings have been designed to sit comfortably on the waist. With a soft non-elasticated and generous waist band they will cover your tummy and not dig in. Perfectly suitable for all activities whether you are running errands in town or participation in a Pilates class!



REGULAR – This length has been created for those of average height or leg length, the top of the waist band should fit comfortable on the waist and the inside leg goes down to the ankles. On those with a longer leg length, these legging will likely sit lower on the body rise and come to a 7/8th length.

LONG – The Longer length legging is designed with a longer rise, to still sit on the waistline of the taller woman, and an inside leg length that sits comfortably on the ankle. Perfect for tall women or if you have lovely long legs.

CROPPED – The cropped style has the same rise and waistband depth as the regular style, which is still suitable for a range of leg lengths. This length will sit mid-calf on those with a 74-79cm inside leg measurement and approximately between below the knee and the top of the calf like a capri fit for those with an 80-85cm inside leg measurement.


Measurement Guide

BODYHEIGHT – Measure from the top of the head to the floor. Stand straight, with feet hip distance apart and flat on the ground.

CHEST – Measure directly under the arms, at the fullest part. All the way around.

WAIST – Measure all the way around the natural waist line – usually the narrowest point

HIP – Measure the fullest part of the hips

INSEAM – Measure from the crotch, down to the ball on the inside of the ankle

These are the basic body measurements, the measurements on the garment will differ, depending on the style and fit.

Nature Knows Best

Fabric Story

All our Tops and Leggings are made with beautiful natural, sustainable fabrics.

Lyocell, Modal & Cotton fibres have so many wonderful properties including excellent moisture absorption, breathability and antibacterial qualities making them perfect for our women's activewear and especially for those with even the most sensitive skin.


Natural sustainable materials, eco friendly packaging, minimal waste production processes, reduced carbon footprint by manufacturing and despatching from one location here in the UK are some of the practises we maintain to help keep the impact on our natural resources low which protects our ecosystem and will improve the quality of our lives both now and for future generations.

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