| http://www.w3.org/ns/prov#value | - According to another embodiments of the present invention, as shown in FIGS. 5 to 7, the fastening band 60 and the cover body 50 include a detachable Velcro tape 63, hooks 64a and 64b, and snaps 65a and 65b that are coupled to each other at the end portions thereof in such a manner as to have a male and female pair.
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