For his birthday, my 9 year old got a gift certificate to Toys R Us that was burning a hole in his pocket. He wanted a hoppity hop but they did not have them, so instead, he migrated to the lego isle.
Out of all the different options, he chose these Coast Guard Legos because it is summer and he wanted some "summer legos" (Coast Guard = beach = summer, I guess).
While only one man comes with the kit, he comes with some really cool assessories including scuba flippers, a tank, mask, and radio. The 4WD has a boat trailer which attaches to the back of it and the little wave runner fits right on it.
The age rating is 5 to 12 which seems to be about right. My son is 9 now but he took these to afterschool and all the little boys seemed to enjoy playing with it (grade K-5 to 3rd).