Size / width

Too tight = higher risk of tearing and less comfort.

Too loose = risk of it slipping off.

There are many more sizes than people realize, from slim to XL.

Material

Latex: standard and usually inexpensive/reliable.

Latex-free (polyisoprene/polyurethane): useful in case of allergy or irritation, and some people find they feel more natural.


Thickness

Thin condoms often provide more sensation.

Thicker ones can be better if you want extra durability.

Ultra-thin versions even exist around 0.02 mm.


Lubricant

Extra lubricant reduces friction and decreases the risk of tearing. With latex, you must be careful not to use oil-based lubricant.

Texture

Ribbed, dotted, warming, delaying, etc., are mainly a matter of personal preference. Not automatically "better".

Buy condoms with a CE mark and check the expiry date and damaged packaging. All condoms you order from Happytoys have this quality mark