A little napkin math for anyone else doing comparisons:

28.9 hours * 52 weeks ~= 1500 hours

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37.5 hours * 48 weeks ~= 1800 hours

37.5 hours * 47 weeks ~= 1760 hours

37.5 hours * 46 weeks ~= 1725 hours

37.5 hours * 40 weeks ~= 1500 hours

So even if you have 4 weeks off and 10 holidays, Treehouse still expects ~225 hours less work per year, or the equivalent of having 10 weeks off and 10 holidays at a normal 9-5 job with a half hour lunch. Treehouse likely gives 2 weeks off, 10 holidays, and 52 Fridays off :)