To provide casual sandals convenient for carrying it to swimming pools and swimming in the ocean which is so small and light as not to be a load while protecting the soles from the concrete floor surfaces on the swimming pool sides and the sand beaches heated to extremely high temperatures by shining during the water play in the swimming pools or on the beaches in the summer seasons.

The casual sandals for water play are put on naked feet on the swimming pool sides and the beaches in the summer seasons and are formed in the shape and size so suitable as to be worn at the front parts of the soles from the tip toes to the tips of the arches 21 of the feet. The sandals have bottom members 12 made of a heat insulating material and are provided with clog thongs 15 and 16 for hooking the fingers respectively.