clean–lined

:  having appealingly trim or well-designed lines At another corner of the park rested … a clean-lined dart of a craft, so sleek that it looked even more out of place on dry land than boats usually do. — William G. Scheller, Islands, May/June 2001 Making the case for the smaller-is-better approach is the bright, clean-lined kitchen at the back of the Bethesda home … — Deborah K. Dietsch, Washington Post, 28 Jan. 2012 Their product line includes spare, clean-lined architectural mantels and ones that appear to be ornately carved. — Peter O. Whiteley, Sunset, February 2001