Wanapoamua kiatu ambayo mbio kununua, labda kipengele muhimu ya ya kiatu ni midsole yake. Huwezi kuona midsole (ni ipo kati ya outsole na insole ya), lakini ni wajibu kiasi kikubwa cushioning miguu yako, magoti, makalio na mwili mzima kupokea kila wakati miguu yako hit ardhi.

Inaweza pia kuwasaidia kukuza mguu utulivu na kuzuia hali kama vile juu taifa wanaoiunga mkono (wakati mguu wako rolls ndani mbali sana) au chini ya taifa wanaoiunga mkono (wakati mguu wako si roll ndani ya kutosha), ambayo ni kuhusishwa na miguu gorofa na matao ya juu.

Midsoles kwa ujumla alifanya kutoka vifaa viwili vya msingi: EVA na PU.

EVA anasimama kwa ajili ya ethilini vinyl acetate. Sio plastiki au mpira lakini povu. Kila midsole ni alifanya juu ya maelfu ya povu bubbles kwamba kutenda kama seli. Kila mmoja wa hawa povu bubbles ni kujazwa na gesi. Matokeo yake ni nyenzo ambayo ni nyepesi na rahisi. Kila wakati nchi kwenye midsole ya EVA, kiatu chako cho chote kupumzikacho kidogo. Gesi ni kuondolewa na kisha acha nyuma katika mara mguu wako majani ya ardhi.

PU pia ni aina ya povu. Ilivyo kwa polyurethane. Vifaa ni mzito zaidi kuliko EVA na ni kwa ujumla chini inayopendelewa kwa wakimbiaji kwa sababu ya wingi wake. Alisema, PU huelekea kushikilia juu bora kuliko EVA. Baada ya muda, bubbles kufanya EVA midsoles mwanga hivyo na bouncy kuanza na kabisa kupoteza baadhi ya hewa yao. PU anatoa bounce chini katika mwanzo, lakini bounce yake inadumu.

Baadhi midsoles ni kufanywa na mchanganyiko wa midsoles mbili. Classic design ni kuweka PU nje (ambapo kiatu na anapokea zaidi dhiki) na kisha kudumisha msingi ya EVA.

Pamoja na midsole, wewe unataka makini kuchunguza viatu makala nyingine pia. Upande wa outsole, ni kawaida muhimu kuchunguza ubora wa traction inatoa. Makala kutafuta na insoles ni pamoja na msaada wa upinde na contoured vitanda mguu.

Neno ya hekima: mara nyingi makampuni kiatu kutumia masharti maalum au "kampuni katika" linapokuja muda wa kutangaza masharti haya moja kwa moja. Kwa mfano, ya Asic Speva(TM) ni kweli kwa njia ya dhana ya kusema EVA (yaani, spEVA). Wengi ubora mbio viatu neema EVA juu PU, au muunganiko wa wawili. Pengine si utapata wengi midsoles PU tu, isipokuwa ni ununuzi katika sehemu ya mavuno.

397 Majibu ya Midsole viatu: EVA povu vs Pu povu
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