Mack Hollins is known for his unique style, and that was on full display during Monday's training camp session. The New England Patriots' wide receiver took the field wearing a red shirt underneath his jersey,

The New England Patriots signed receiver Mack Hollins to a two-year, $8.4 million contract this offseason. New England also signed free agent receiver Stefon Diggs, drafted receiver Kyle Williams, and signed undrafted free agent receivers Efton Chism III and Jeremiah Webb.

The 31-year-old Hollins recently welcomed CBS Sports' Bryant McFadden to his home for an inside look at his unconventional mind, declaring his barefoot philosophy as both a loosely medical and scientific experiment: