Build a specification shortlist
Record the Item No., neck and chest ranges, adjustment points, padding, and leash attachments for each candidate. Keep optional features such as handles and reflective details in separate columns so a feature on one harness is not assumed to apply to another. Use the listed measurements when comparing models rather than treating S, M, and L as a universal sizing system.
Plan quantities by size and color
Use your own sales history or customer profile to propose a quantity for each option. Include the distribution in your inquiry, rather than just the total number of harnesses. Ask whether the combination satisfies the selected product's MOQ. If you want coordinating leashes or collars, list their Item Nos. separately and ask for the available combinations.
Review a sample against your shortlist
Ask about sample availability, charges, and shipping before placing a bulk order. Compare the sample's measurements, adjustment, stitching, buckles, and attachment points with the agreed specification. Keep a record of the options reviewed and any changes needed; confirm those details in the quotation rather than assuming that a different color or size has identical construction.