Earlier this year, pupils worked with Ian McCallum, owner of Only Sport Ltd, to fundraise money for new outfits.
In August, however, the van, which contained them, was stolen, along with the clothes.
Now, the kit maker donated brand new kits to the school's football team, worth around £2000. These include a set of home kits, away kits and training kits, jumper and poloshirts.
The squad is made up of 14 boys, who are grateful and excited to break in the new strips on Saturday.
Many of the youngsters also play for Nitshill team Whitacres Wolves, whose coaches helped liaise the donation.
Mark Strain, head coach at St Bernard's, said: "Keeping a school football team is quite hard.
"Whitacres Wolves have gone above and beyond and managed to secure these kits, which is just unbelievable.
"If it wasn't for this guys, then the strips wouldn't have happened.
"They also have managed to sort it in a matter of six or seven weeks, which is amazing."
Ian McCallum, owner of Only Sport Ltd, said: "I feel fortunate that I am in a position that I can help.
"Through our connection with Whitacres Wolves, we heard that the van was stolen and everything disappeared.
"We do a lot in the community, so, when you get into a situation like that, it's kids, you know?
"I was a coach with a boys' club for 20 years, so I know how difficult is is to raise the money."