How to define small, medium, large, and extra large for a dog bed catalog, which measurements to record, and how to keep sizes consistent across suppliers.
A medium bed from one supplier can be the size of a large bed from another. No single standard defines small, medium, and large for pet beds, so each supplier follows its own convention. When you buy from more than one supplier, or when you replace a supplier, the size names stop meaning the same thing.
The remedy is to define your own size system in your catalog, and to specify every product against it. This costs a little time at the start and saves a great deal of confusion later.
Start by listing the measurements that describe a bed. For a rectangular bed, these are the outside length and width, the inside sleeping area, and the height. For a round or donut bed, they are the outside diameter, the inside diameter, and the rim height. For a cot, they are the frame length, width, and the height from the floor.
Pick the measurements that customers use to decide, and make those the ones that define the size. In most catalogs, the inside sleeping area is the best defining measurement, because it is the part the dog actually uses. The outside dimension is secondary, but it matters for the shipping carton and the space in the customer's home.
Decide how many sizes you will carry and how far apart they are. Too few sizes leave gaps for owners of dogs between them. Too many sizes add inventory and confuse the shopper. Many catalogs carry three to five sizes in a line, and add a larger size for giant breeds only where there is demand.
Space the sizes evenly in inside area or length, so that the step from small to medium feels similar to the step from medium to large. Uneven steps are noticed by customers and lead to questions.
Every bed varies a little in size. Fabric stretches, fill settles, and cutting has a small variation. A catalog that lists a single number without a tolerance sets up a dispute whenever a measured bed differs by a fraction. Ask the supplier for a tolerance, for example a stated plus and minus in inches or in percent, and write it in the spec sheet.
Tolerance should be tighter for beds that must fit an insert or a cover, and looser for loose-fill beds. Record the tolerance you agree for each product line, because it can differ across lines.
Keep one master table that holds the sizes for every product line. The table lists the internal size code, the public name, the target dimensions, the tolerance, the carton size, and the dog guidance. Each supplier quote is checked against it.
Supplier drawings show the intended size, and the finished bed shows the actual size. Measure at least one sample of each size, and compare it with the table. If a bed measures outside tolerance, either the pattern or the table needs to change.
Do this once per supplier and size, and again when the fabric or the fill changes. A change from one fill to another can change the finished size noticeably.
If you add a second supplier for the same product line, give them your size table, and ask them to match it. Do not accept their size names as a replacement for yours. A supplier who cannot match your table within the tolerance should be asked to quote their nearest size, and you should rename it rather than call it by your existing name.
For covers and replacement parts, matching matters most. A cover made for the medium bed from one supplier may not fit the medium bed from another.
Show the table on the product page and in the wholesale price list. Add a short note on how to measure a dog, and link to the measuring guide for customers. Retailers who buy from you will reuse the table, so give it to them in a format they can paste into their own pages.
If a size is discontinued or changed, keep a record of the change and the date. Customers who bought a size in the past may come back for a replacement cover, and your support team will need to know which table applied.
One size name rarely fits every shape in a catalog. A medium donut bed, a medium rectangular bed, and a medium cot cover very different footprints. If the catalog uses the same names across shapes, tell the buyer that the names are relative to the shape and give the dimensions for each.
A cleaner approach is to show the target dog length for each size across all shapes, and then list the dimensions of each shape under that heading. The buyer then sees how a medium relates to a dog, not only to a bed.
US buyers read inches and pounds, while suppliers often work in centimeters and kilograms. Convert once, in the master table, and round in a consistent way. Do not let each person convert on the fly, because rounding differences create small mismatches between the page, the label, and the carton.
State which unit is the original. If the supplier's drawing is in centimeters, keep that as the reference and derive the inches. When the supplier measures a sample, compare in the original unit. This avoids a chain of rounded numbers that drift away from the true dimension.
A size chart is not a one-time document. Fabric changes, fill changes, and new suppliers all affect finished dimensions. Add a date and a version to the master table, and review it whenever a material changes. Keep earlier versions so you can answer questions about beds sold under them.
Link the chart to the SKU list, so that each SKU has a size code that points to one row in the table. A spreadsheet with a lookup is enough. The aim is that no one types a dimension by hand into a listing.
Related product line: Donut dog beds. Quotes and specifications are confirmed in writing for each order.