new lighter?

[Ropey]

Try buylighters.com, that is our all lighter site. We only have 1/4 of our lighters listed on cheaphumidors. Dual Flame or Double Flame? The Vector Armor is one of our top selling dual flames, not too expensive
http://www.buylighters.com/Vector-KG...er_p_1373.html

Am I right to assume that high altitude lighters are better constructed to withstand higher vapor pressures inside the lighters at high altitudes?

My follow up question would be: could those lighters hold isobutane at sea level without the potential of rupture due to their better interior construction?