We do! But only for a few items at this time and only for disposable diapers and pads. You can purchase them here https://www.llmedico.com/adult-diaper-samples/
Each product page either has a "Size Chart" located under the product description which shows the products dimensions for each size or the size is shown in the option selection. While these charts are as accurate as possible, every person is different. We highly recommend purchasing 1 size first ...