Child enjoying the beach while wearing a waterproof Bloccs cover

Bloccs sizing guide

Find the right cover in under a minute.

Choose the area, enter two simple measurements and we’ll recommend the most comfortable Bloccs cover that fits.

Find my size View sizing charts
  • About 60 seconds
  • Use cm or inches
  • Every compatible size checked
Cover the whole injury siteThe cover must extend beyond it
Leave 2–3 cm of bare skinThis is where the seal sits
Comfortable fit firstExtra cover length is completely normal

Bloccs size finder

Find the right cover and size

Choose the cover area, find the right seal point, then enter your measurements. It takes about 60 seconds.

  1. 1Cover
  2. 2Seal point
  3. 3Measure
  4. 4Result

What do you need to protect?

Choose the area with the cast, dressing or PICC line.

Visual sizing guides

Check the full measurements.

Choose the cover type to see every available size in centimetres and inches.

Bloccs arm cover sizing chart
Arm cover sizingCheck both adult and child sizes before ordering.

Measuring videos

See exactly where to measure.

Watch the short guide for your cover type before entering your measurements.

How to measure for an arm cover
How to measure for a leg cover

Still unsure about the fit?

Send us your measurements and a photo of the cast or dressing. Our support team will help confirm the right cover.

Ask the sizing team