the fit be a bit too snug , but it do work . give good protection to my Garmin 255w 4.3 inch gp . however , after use for 9 month -lrb- about one trip every 1-2 month -rrb- , the glue use to hold the strap in the case begin to ooze and get on the GPS case , so I be downgrade my rating . I try slip the gp into a tissue , napkin , plastic bag , etc. hope that would protect it or stick to the ooze glue , but the fit be so tight that the GPS just push through the bottom of whatever you wrap it in . I do store the GPS in the case between use ; perhaps not store the GPS in the case at home might help ... less strain on the strap . -lrb- however , it ooze when store in the middle of a trip , not during a long storage -rrb- I pick up a cheap smart phone case to try instead .