This pack was sent to me by Mardingtop to review. I have had this pack for about 2 months now and it is fantastic, great quality and function for the price, a lot of packs for hiking and camping can be very expensive but this pack and Mardingtop in general is a very budget friendly way to go. The pack space is 40L, definitely could be used for work, school and outdoor ventures. There are so many internal sleeves and pockets to organize gear and keep things easy to get to. Highly recommend this pack and the Mardingtop brand, this is my 3rd bag by them. Hope this review helps with any buying decisions.