Backpack

A backpack — also called bookbag, kitbag, knapsack, rucksack, pack, or sackpack — is, in its simplest form, a cloth sack carried on one's back and secured with two straps that go over the shoulders, but there can be variations. Lightweight types of backpacks are sometimes worn on only one shoulder strap.

Backpacks are commonly used by hikers and students, and are often preferred to handbags for carrying heavy loads or carrying any sort of equipment, because of the limited capacity to carry heavy weights for long periods of time in the hands.

Large backpacks, used to carry loads over 10 kg (22 lbs), as well as smaller sports backpacks (e.g. running, cycling, hiking and hydration), usually offload the largest part (up to about 90%) of their weight onto padded hip belts, leaving the shoulder straps mainly for stabilising the load. This improves the potential to carry heavy loads, as the hips are stronger than the shoulders, and also increases agility and balance, since the load rides nearer the wearer's own center of mass.

Justin Bieber

Justin Drew Bieber (/ˈbiːbər/; born March 1, 1994) is a Canadian singer, songwriter, and record producer. Bieber released his debut EP, My World, in late 2009. It was certified platinum in the U.S. He became the first artist to have seven songs from a debut record chart on the Billboard Hot 100. Bieber released his first full-length studio album, My World 2.0, in 2010. It debuted at or near number one in several countries and was certified triple platinum in the U.S. It was preceded by his most successful single to date, "Baby".

Following his debut album, he had his first headlining tour, the My World Tour, released the remix albums My Worlds Acoustic and Never Say Never – The Remixes -- and the 3D biopic-concert film Justin Bieber: Never Say Never. He released his second studio album, Under the Mistletoe, in November 2011, when it debuted at number one on the Billboard 200. Bieber released his third studio album, Believe, in 2012. His fourth studio album Purpose was released in November 2015. His U.S. album and singles sales total 44.7 million.

Lil Wayne

Dwayne Michael Carter, Jr. (born September 27, 1982), better known by his stage name Lil Wayne, is an American hip hop recording artist from New Orleans, Louisiana. In 1991, at the age of nine, Lil Wayne joined Cash Money Records as the youngest member of the label, and half of the duo The B.G.'z, alongside fellow New Orleans-based rapper Lil' Doogie. In 1996, Lil Wayne formed the southern hip hop group Hot Boys, with his Cash Money label-mates Juvenile, Young Turk and Lil' Doogie (who now goes by B.G.). Hot Boys debuted with Get It How U Live!, that same year. Most of the group's success came with their platinum-selling album Guerrilla Warfare (1999) and the 1999 single "Bling Bling". Along with being the flagship artist of Cash Money Records, Lil Wayne is also the chief executive officer (CEO) of his own label imprint, Young Money Entertainment, which he founded in 2005.

Lil Wayne's solo debut album Tha Block Is Hot (1999), was certified platinum by the Recording Industry Association of America (RIAA). His subsequent albums, Lights Out (2000) and 500 Degreez (2002), went on to be certified gold. Wayne reached higher popularity with his fourth album Tha Carter (2004), which was led by the single "Go D.J." and his appearance on Destiny's Child's Top 10 single "Soldier", that same year. The album was followed by Tha Carter II (2005), as well as several mixtapes and collaborations throughout 2006 and 2007. Wayne gained more prominence with his sixth album Tha Carter III (2008), which became his most successful album to date, with first-week sales of over one million copies in the United States. The album won the Grammy Award for Best Rap Album and includes the hit singles "Lollipop", "A Milli" and "Got Money".