How I can know my goggles size ?
21876
goggles dont come in sizes but in styles. Its wathever feel more conmfortable to you, the adjustment is done thru the strap. If you are talking about prescription it is usually what your glasses prescription is if its different on both eyes go with the lowest prescription. otherwise you will feel disoriented.
21877
They are adult size with different nose pieces to make a more custom size. If you mean correction strength ask your eye doctor. My son is nearsighted, he needs a negative correction I got him -2.0
1930999
Didn't measure it. Then again, what's a "regular head" size anyway :)? They fit my 7-yr old son, now 9. My then 10-yr old son preferred the slim adult goggles. We've tried many goggles. For 9 & under, I recommend Sporti Antifog Cabo Jr. (see swimoutlet-com). They are slim and better fit for smaller faces, come with a case, and forever fogless, not to mention cheap and practically disposable for those kids that keep losing their goggles (mine don't - they learned not to after hearing it from me).
107994
From speedos websiteSIZING: Measure the width of your palm horizontally.SMALL = 8.0 cmMEDIUM = 8.5 cmLARGE = 9.0-9.5 cmEXTRA LARGE = 10.0-10.5 cm
1531680
Size 45 and 10. The 45 fits but I recommend a belt of electrical tape around the objective tube to make it perfect. 10 for the eyepiece is good to go!
771628
measure scope optic with tape measure go to butler creek web sight down load size chart and pick what size you need based on your measurments
159857
Like you, I don't know what the difference is. I can tell you that my measurement is 21 1/4 " circumference where the goggles fit and these goggles fit just fine. I have a small head these goggles fit me just fine. I hope this helps..
302927
there is a chart so you can pick your helmet size, you just need to know your head circumference, 60 cm is L size
256064
If you go to the SwimWays website it will tell you how to measure for size.
269602
Measure or look up the outside diameter of your scope. Then look up your size on this Butler chart. http://www.butler-creek.com/productsImages/charts/flip_scope_chart.html
1684407
Style of glasses and size - I can't tell you exactly, but visit a store where there is a display, hold your glasses against the display and you will find the recommended size/style for your prescription glasses.
1953998
Inside diameter of extender is about 1.5". Measure the diameter of the tube with the eyepiece set screws. If it is about 1.5" you are all set. The extender has to slide over your eyepiece and clamp in the same area where your eyepiece set screws are.
282298
I do not know what 'cyl' and 'axis' measurements are, but, here is what we did:1. when ordering Speedo goggles, we got the +/- number, from our opthomologist.2. when ordering the ProMate snorkeling mask, we selected the the color and then selected the appropriate eye-adjustment (my son is nearsighted) from the "size" pull-down menu on the ProMate scuba options.3. My 13 year-old son loves the mask and was our family underwater photographer in Cozumel.
532815
Sizing chart can be seen here: http://www.finisinc.com/equipment/technical-products/training-fins/zoomers-fit.html
1308191
Measure or Google your windshields dimensions and then compare to the dimensions on the product.
57694
The goggles only come in one size, but they are adjustable. I looked at my boxes of contact lenses (they had the prescription information on the sides) to decide what level of correction I needed for the goggles. The goggles are great; I can see well under the water, which is great when doing laps in the pool. They also arrived very quickly from the company. I highly recommend them.
635063
You must have gotten to that page via a search. Click on the by SCC link (under the product description). That will take you to a page showing all their products with a "See Size Options" for each one
302928
you need to messure your head circumference to know your helmet size. use this tablehttp://www.upnorthsports.com/Sites/upnorth/Include/HelmetSizingChart.tml#bell