X-ray goggles

I've been swimming today for the first time in 'I can't remember how long'. I thought the pool looked a bit short and when I'd swam 32 lengths in about 20 minutes instead of the usual 25 I thought I'd better check. Suspicions were confirmed, it was a 20 metre pool. I know that a mile is still a mile but 80 lengths just sounds so much longer than 64.

I saw the X ray effect on Photo Radar this weekend & thought it suited my goggles.