Frequently Asked Questions
Everything you need to know about shopping with DiagMart
How do I determine the right size for me?
Each product page includes a detailed size guide with specific measurements. We recommend comparing these measurements against a garment you already own for the perfect fit.
What is DiagMart's return policy?
We offer a 30-day return window for all unworn items with original tags attached. Simply visit our returns portal to start your request and receive a prepaid shipping label.
How long does shipping take?
Standard shipping typically takes 3-5 business days within the continental US. Express shipping options are available at checkout if you need your items sooner.
Do you offer international shipping?
Yes, DiagMart ships to over 50 countries worldwide. International delivery times vary by location but generally range from 7 to 14 business days.
How should I care for my DiagMart apparel?
To maintain the quality of your garments, we recommend machine washing on a cold, gentle cycle and hanging to dry. Specific care instructions are located on the inner label of every piece.
What payment methods do you accept?
We accept all major credit cards (Visa, Mastercard, American Express), PayPal, Apple Pay, and interest-free installment plans through Klarna and Afterpay.