Never rely on "Small" or "Medium"; always check the exact cm/inch measurements for each individual item.
This is the most reliable way to check the fabric quality and "real life" fit.
Shein (Clothing):shein.com/">Shein shopping or sizing guide?
If this is a specific social media account or a small boutique, providing a bit more context (like the platform or location) would help. If you meant a general guide for shopping on "Shein":
Is this related to a specific toy line, a game (like Animal Crossing ), or a creative project?
Look for "100% Cotton" or "Viscose" if you want to avoid thinner polyester fabrics.
To get the right guide for you, could you clarify which of these you meant?