SperryTop-Sider Men's A/O Boat Shoe Sahara 13 D(M) US

Do you have to ties the laces or are these slip-ons? The pictures are not consistent.

Considering buying these from seller 'one nation premium'.. has anyone purchased from them? is it the real Sperry shoe or a knockoff?

the ad shows 10 1/2 but it does not say which width. how can i purchase if they do not specify width

My husband wears 8 1/2 a or narrow. what is 2a?