POS = Point of Sale, not the other thing you were thinking of. [:D]
FWIW, I couldn’t get an umbrella for my cart from Sabrett’s, so I bought one on fleabay. Paid 100 bucks + shipping, which is less than a non-branded heavy duty market umbrella.
Sabrett’s is one brand that New Jerseyans recognize. A cart here needs one of those umbrellas IMO.