Ƙungiyar ƙwallon ƙafa ta ƙasa, kuma aka sani da NFL, ita ce Ƙungiyar ƙwallon ƙafa ta Amurka.Gasar ƙwallon ƙafa ta Amurka ta fi girma.Taron Kwallon Kafa na Amurka (AFC, League League) da Taron Kwallon Kafa na Kasa sune manyan tarukan farko guda biyu da suka kunshi kungiyoyi 32 na gasar (Taron Kwallon Kafa na Kasa, wanda ake kira NFC, National League).Tawagogi 16 daga kowace tarayya an raba su zuwa gabas, Kudu, Yamma, da Arewa.Kowane rukuni ya ƙunshi ƙungiyoyi 4.

A takaice dai, muna kiransu rigan dillalai."Copy version of the shirt" yana nuna cewa bayyanar ta yi kama da nau'in ɗan wasan, amma masana'anta, girma, da nau'in tufafi sun bambanta da yawa da nau'in mai kunnawa, bisa ga fassarar Turanci madaidaiciya.Lambar, tambarin ƙungiyar akan hannun rigar sunan mai kunnawa (idan akwai), da'irar da ke kan hannun riga (idan akwai), da tambarin Reebok duk an buga su akan ƙwanƙwaran siriri na rigar diyya.Sabanin nau'in mai kunnawa, wanda ya dace da kayan kariya, nau'in bugu na riguna ya dace da kullun yau da kullum.

An raba sigar fan ɗin rigar zuwa manya (manyan Jersey), matasa (Youth Jersey), da nau'ikan mata don dacewa da alƙaluma daban-daban (Women Jersey).Mafi mashahuri kuma tsohuwar sigar ita ce babba.Rigar matasa ta zo da girma ga yara masu shekaru 8 zuwa 10, kuma lambar da alamar tambarin NFL suna da ƙanƙanta.Sigar jariri ba ta da rikitarwa kuma mafi mahimmanci fiye da sigar manya.Sigar mata ta rigar tana da datsa kugu don dacewa da jikin mace.Ba a bayyana a cikin zurfin ba.