Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Works well for Scuba boots

I bought this to dry my Scuba boots, which as everyone who dives knows, are notoriously difficult to dry. Tried it once so far, and after drip drying, it took about 4 hours to finish drying. It uses no heat, so no danger of fire or damage to neoprene. Compact enough for travel as it fits into the boots.Compared to the other DryFast two-horned solid-plastic dryer, this one is much for compact for travel.My main complaint is the power adapter, which is the older transformer type (9 volt 0.5 amp DC), that works only on 120 volts -- a problem for international travel. That will require some fiddling to correct. Also it's a bit noisy, but can always be put away somewhere when it's running.