Why Did You Choose This?
Dived for over 40 years, old school. Feel weird when use alldry, hyperdry, ultradry, etc. Is my personal choice. The semidry have more protection when the water comes from above, but still the same feeling than the classic and flexi & purge valve snorkels. Shape & size where the mouth piece attaches to snorkels is the least protruding & the only rounded in the market (TUSA Hyper-dry Elite II is not semi-dry), there are less chances that something gets tangled in it & has better hydrodynamics.