SAS Nudu Heel Strap Sandal

Price Range: $$

At Zappos.com:
Rating: 5 out of 5 stars – 846 ratings
Includes many 5 star reviews from narrow buyers who said the sandals are very comfortable from the first wearing, are an excellent shoe for narrow feet, have adjustable straps that make for a great fit, have a cushioned bottom, and are beautifully made.
Also includes a few reviews from narrow and slim buyers who said the narrow and slim widths were not narrow enough, and a few other reviews that said the narrow width was too narrow. A couple of these reviewers were able to get a good fit by switching to the medium width.
Available in narrow and slim widths.
View shoe on Zappos site

At Nordstrom:
Rating: 4.4 out of 5 stars – 7 ratings
Includes a 5 star review from a narrow buyer who said the sandals are so comfortable.
Also includes a couple reviews from buyers who said the bottoms squeak on hardwood floors, but another reviewer said the squeak went away after taking a walk on a concrete sidewalk.
Available in narrow and slim widths.
View shoe on Nordstrom site