Swimming glass, has activation portion activated between branches that operate with support points and force two arresting portions to move towards top such that straps are adjustable in length by controlling stop portions against grooves

摘要

The glass (1) has a pressure part (43) comprising an activation portion (433) activated between two branches (434, 435) that are located on corresponding sides opposite to the activation portion. The corresponding branches are stumbled against two stop portions (423, 424) when the activation portion is pushed towards the bottom. The branches operate with double support points and force two arresting portions (431, 432) to move towards the top such that headband straps (40) are adjustable in length by controlling the stop portions against stop grooves (403).