There is no single Timecard size chart. The catalog includes different product forms from different production partners, so the measurements that matter belong to the item in front of you.
Start on the product page
Where an item has a supplier measurement table, open Product details and read that table before choosing a size. Check the unit shown, then compare the listed measurements with an item you already own and wear comfortably.
Do not carry one size across the catalog
A t-shirt and a pair of joggers can use different measurement points and different size ranges. The same letter on two products does not prove that their dimensions match. Treat each product page as its own source.
Read the labels, not the guess
Use the column and row labels exactly as written. If a chart gives width and length, compare width and length; do not turn those numbers into a fit promise the chart does not make.
See how measurements are presented on a t-shirt product page, or browse all products and check the details for the item you are considering.