Nothing is too much trouble and your comfort is paramount. Simply check the size chart and if your measurements are slightly different to those shown then simply just let us know in the order instructions box on the size section of the Onesie builder. We can then make your Onesie to measure for no extra charge. We can add or reduce the width, the body length, leg length and sleeve length. Our sizes are for babies, children, men and women and range from 0-3 months to 8XL. Please get in touch on the online chat below if you need any help or advice.