"Security lockers" refers to a type of storage unit or cabinet that is built specifically to keep belongings or valuable items safe and secure. Full definition
All beds have linen and towels with security lockers for peace of mind. (wikiaustralia.com)
While the dormitories don't have en - suite bathrooms, the shared shower and toilet facilities are all western toilets & hot water showers, with security lockers in the dorms, free WiFi, CCTV and 24 hr electricity and reception. (davyjoneslocker.asia)
The bathroom is either private Security locker available 4 euro / 24h, free WiFi, Touristic information. (hostelbookers.com)