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Message: <blockquote data-quote="BruceH" data-source="post: 3209185" data-attributes="member: 106398">drabina .... How old are your sons, that info may be helpful in matching up an appropriate binocular.  It is important to find a binocular that will squeeze together close enough so the distance between the light coming out of the barrels (exit pupils) lines up with the users pupils.  This interpupillary distance (IPD) is more narrow on children.  Many of the binoculars on the market are designed for adults and the IPD specs do not go low enough for children (and some adults with a narrow IPD).  Be sure and check out the IPD specs on any binocular you are considering for your sons.  The IPD specs of the Yosemite 6X30 (along with the high quality optics, light weight, lower power and low price) is one of the things that make it such a great choice for kids.  The IPD spec for the 6X30 Yosemite is 50mm.  I can not find a spec on the new Papilio II but an old B & H Photo page shows a number of 56mm for the older model.  <a href="http://www.bhphotovideo.com/bnh/controller/home?O=productlist.jsp&A=details&Q=&sku=376568&is=REG&fromDisList=y" target="_blank">http://www.bhphotovideo.com/bnh/controller/home?O=productlist.jsp&A=details&Q=&sku=376568&is=REG&fromDisList=y</a>Buyng a binocular with to large of an IPD will not work just as buying a pair of shoes that does not fit.  The user will not be able to line them up with their eyes to get the proper view.  You can test that out for yourself with the Yosemite by squeezing them in and out.  If you do not know the IPD of your sons, stop by the vision center of Costco, Sam's Club, Walmart, etc and ask if they would do a measurement for you.  It should only take them a minute and I suspect they would be willing to do it as a good will gesture.</blockquote>

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