Calcaneal tuberosity
Plantar aponeurosis
1st layer-
Flexor digitorum brevis
Abductor hallucis
Abductor digiti minimi 
2nd layer-
Tendon of flexor digitorum longus
Tendon of flexor hallucis longus
Lumbricals
Quadratus plantae
3rd layer- 
Flexor digiti minimi
Flexor hallucis brevis
Adductor hallucis oblique head
Adductor hallucis transverse head
Medial plantar artery
Medial plantar nerve
Lateral plantar nerve
Lateral plantar artery
Deep plantar arch
Posterior tibial artery
Medial calcaneal artery
Medial calcaneal nerve
4th layer- 
Plantar interossei / Dorsal interossei
Tendon of fibularis longus
Long plantar ligament
Deep plantar arch
Plantar metatarsal artary