▁ ▁For ▁books ▁Many ▁books ▁in ▁Japan ▁are ▁supplied ▁with ▁an ▁ob i , ▁which ▁is ▁normally ▁added ▁outside ▁any ▁dust ▁jack et . ▁However , ▁a ▁book ▁in ▁a ▁s lip case ▁may ▁have ▁an ▁ob i ▁around ▁the ▁s lip case . ▁ ▁In ▁English , ▁the ▁term ▁bel ly - band ▁is ▁sometimes ▁used ▁instead . ▁ ▁Other ▁applications ▁The ▁term ▁is ▁also ▁used ▁for ▁a ▁strip ▁that ▁is ▁loop ed ▁over ▁one ▁side ▁( us ually ▁on ▁the ▁left ) ▁or ▁fol ded ▁over ▁the ▁top ▁of ▁LP ▁albums ▁released ▁in ▁Japan , ▁and ▁fol ded ▁over ▁the ▁left ▁side ▁of ▁music ▁CD s , ▁video ▁games , ▁Las er Dis cs , ▁or ▁DVD s . ▁This ▁is ▁also ▁called ▁t as uki . ▁Ob i ▁are ▁unique ▁to ▁Japan ▁and ▁are ▁used ▁to ▁provide ▁the ▁title ▁of ▁the ▁product , ▁track ▁list ings ▁( if ▁applicable ), ▁price , ▁catalog ▁number ▁and ▁information ▁on ▁related ▁releases ▁in ▁Japanese . ▁ ▁It ▁is ▁used ▁by ▁the ▁consumer ▁to ▁determine ▁what ▁is ▁included ▁in ▁the ▁album ▁or ▁book , ▁and ▁the ▁store ▁can ▁use ▁the ▁information ▁for ▁ordering . ▁ ▁Ob i ▁are ▁sometimes ▁used ▁on ▁boxes ▁for ▁collect ible ▁to ys ▁and ▁figures . ▁ ▁Product s ▁with ▁an ▁ob i ▁have ▁become ▁popular ▁with ▁some ▁collect ors , ▁as ▁products ▁with ▁the ▁ob i ▁int act ▁can ▁fetch ▁prem ium ▁prices , ▁and ▁are ▁collect ible ▁items ▁in ▁their ▁own ▁right . ▁A ▁used / second ▁hand