Quick answer

If a condom leaves deep red marks, feels painfully tight, or slides around during sex, you're using the wrong size. A properly fitting condom should feel snug but comfortable, stay in place, and not restrict sensation. Measure your girth and length, then choose a size that matches—custom fit brands like MyONE® offer a range of widths and lengths to solve common fit problems.

Common signs your condom is too tight

A condom that's too tight can cause discomfort, reduce sensation, and even break during use. Watch for these signs:

If you notice any of these, it's time to size up. A condom that's too small can also roll down unexpectedly or feel like it's cutting off circulation.

  • Red marks or indentations on the penis after removal
  • Difficulty rolling the condom down past the head
  • A feeling of constriction or numbness during sex
  • The condom breaks or tears during application or use
  • Loss of erection due to tightness

Common signs your condom is too loose

A condom that's too loose can slip off during sex, increasing the risk of pregnancy and STIs. Look for these warning signs:

If you experience any of these, you likely need a smaller nominal width or a different length. A loose condom is not just uncomfortable—it's a safety risk.

  • The condom slides down or comes off during sex
  • Wrinkles or excess latex at the base or tip
  • A feeling that the condom is 'floating' rather than snug
  • You need to hold the base to keep it in place
  • The condom leaks semen after ejaculation

How to find your correct condom size

Condom size is determined by two measurements: girth (circumference) and length. Girth is the most critical factor for fit—if the condom is too tight around the base, it will be uncomfortable; if it's too loose, it may slip. Use a soft measuring tape or a piece of string to measure the circumference of your erect penis at the widest point (usually mid-shaft). For length, measure from the base to the tip.

Once you have your measurements, compare them to condom sizing charts. Standard condoms typically have a nominal width of 52-56mm. If your girth is above or below that range, you'll need a larger or smaller size. Custom fit brands like MyONE® offer a wide range of girth numbers (e.g., 55, 57, 64) and length letters (e.g., G, K, L) to match your exact measurements.

Diagnose your fit problem

  • Red marks or pain at the base: The condom is too tight in girth. Measure your circumference and choose a larger nominal width, such as 57mm or 64mm. If marks persist, size up again or try a custom fit brand.
  • Condom slips off during sex: The condom is too loose in girth or too long. Measure your girth and length, then select a smaller nominal width or shorter length. If it still slips, consider a snugger fit or a different brand.
  • Condom breaks during use: Often caused by a condom that's too tight or by using expired products or oil-based lubricants. Check the expiration date and use water-based lube. If breakage continues with correct use, try a larger size.
  • Wrinkles at the tip or base: Indicates the condom is too long or too wide. A shorter or narrower size will fit more securely. If wrinkles remain, consider a custom fit size.
  • Loss of sensation: A too-tight condom can reduce feeling. Switching to a larger size or a thinner condom can help. If sensation doesn't improve, consult a healthcare provider.

Custom fit options for common size problems

  • MyONE® Size 64L My Custom Fit® Condom: MyONE® Size 64L My Custom Fit® Condom: Girth Number 64 (64mm nominal width) with Length Letter L (8.5 inches). This is one of the widest and longest condoms available, ideal if standard condoms are far too tight and short, causing discomfort or breakage.
  • MyONE® Size 55G My Custom Fit® Condom: MyONE® Size 55G My Custom Fit® Condom: Girth Number 55 (55mm nominal width) with Length Letter G (6.5 inches). A classic wide fit for those who need a bit more girth than standard but less length, preventing slippage and bunching.
  • MyONE® Size 57K My Custom Fit® Condom: MyONE® Size 57K My Custom Fit® Condom: Girth Number 57 (57mm nominal width) with Length Letter E (8 inches). Slightly longer and wider than standard, this size helps if you're between sizes and experience mild tightness or slipping.