LAS VEGAS – Floyd Mayweather Jr was issued standard dark blue prison garb and slippers and will be kept apart from the jail’s general population after he booked into a Las Vegas jail on Friday to serve a 90-day sentence for domestic violence against an ex-girlfriend, a term that was previously postponed so the boxer could compete in a bout.Mayweather’s jail sentence stems from a guilty plea in December to a charge of felony battery and pleas of no contest to two counts of harassment linked to a 2010 attack on his ex-girlfriend, Josie Harris, and verbal threats against two of his children with her. However, the start of his jail term was delayed so he could fight in a super light middleweight bout at the MGM Grand, where he came through 12 bruising rounds to prevail over Puerto Rican boxer Miguel Cotto.Mayweather was sentenced to six months for that outburst but half the jail term was suspended. The decision to delay his serving of the sentence, which was opposed by prosecutors, was expected as a major prize fight can generate $10m (£6.5m) to $15m in non-gambling revenue for the city.During his time in the Clark County Detention Center, Mayweather will be confined to a cell consisting of a bed, toilet, sink and small desk, with a window to allow direct sunlight into the room, Las Vegas police said in a statement. He will be allowed two books or magazines in his cell, up to five religious books and will be fed three meals a day, starting with breakfast.