A process for producing a resilient, flexible polyurethane, comprising the steps of: a providing a polyol blend (i) comprising: i.a from 5 to 70 weight % of a polyol mixture (i.a) comprising ethylene oxide-capped polypropylene oxides each having a hydroxyl equivalent weight of from 1200 to 3000 and containing at least 70% primary hydroxyl groups, wherein from 5 to 80% by weight of the ethylene oxide-capped polypropylene oxides are nominally difunctional, from 0.5 to 20% by weight of the ethylene oxide-capped polypropylene oxides have a nominal functionality of four or higher, and the balance of the ethylene oxide-capped polypropylene oxides, but not less than 1.5% by weight thereof, are nominally trifunctional; i.b from 1 to 20 weight % of one or more autocatalytic polyol compound (i.b) having a functionality in the range of 2 to 8 and a hydroxyl number in the range of 15 to 200, wherein said autocatalytic polyol compound comprising at least one tertiary amine group, and said autocatalytic polyol being an amine initiated polyol obtained by alkoxylation of at least one initiator molecule selected from the group consisting of 3,3'-diamino-N-methyldipropylamine, 2,2'-diamino-N-methyldiethylamine, 2,3-diamino-N-methyl-ethyl-propylamine, or a mixture thereof; i.c from 25 to 80 weight % of a low unsaturation polyol (i.c) having a functionality equal to or greater than 2, a hydroxyl equivalent weight of from 1800 to 2800, and a total unsaturation value of equal to or less than 0.06 meq/g; wherein weight percents are based on the total weight of the polyol blend (i); b providing one or more organic polyisocyanate (ii); c forming a reactive blend (iii) by continuously merging said polyol blend (i) and said organic polyisocyanate (ii) in the presence of a blowing agent and, optionally, one or more additive; and d subjecting the resulting reactive blend (iii) to conditions sufficient to cure the reactive blend to form a resilient, flexible polyurethane foam. a providing a polyol blend (i) comprising: i.a from 5 to 70 weight % of a polyol mixture (i.a) comprising ethylene oxide-capped polypropylene oxides each having a hydroxyl equivalent weight of from 1200 to 3000 and containing at least 70% primary hydroxyl groups, wherein from 5 to 80% by weight of the ethylene oxide-capped polypropylene oxides are nominally difunctional, from 0.5 to 20% by weight of the ethylene oxide-capped polypropylene oxides have a nominal functionality of four or higher, and the balance of the ethylene oxide-capped polypropylene oxides, but not less than 1.5% by weight thereof, are nominally trifunctional; i.b from 1 to 20 weight % of one or more autocatalytic polyol compound (i.b) having a functionality in the range of 2 to 8 and a hydroxyl number in the range of 15 to 200, wherein said autocatalytic polyol compound comprising at least one tertiary amine group, and said autocatalytic polyol being an amine initiated polyol obtained by alkoxylation of at least one initiator molecule selected from the group consisting of 3,3'-diamino-N-methyldipropylamine, 2,2'-diamino-N-methyldiethylamine, 2,3-diamino-N-methyl-ethyl-propylamine, or a mixture thereof; i.c from 25 to 80 weight % of a low unsaturation polyol (i.c) having a functionality equal to or greater than 2, a hydroxyl equivalent weight of from 1800 to 2800, and a total unsaturation value of equal to or less than 0.06 meq/g; wherein weight percents are based on the total weight of the polyol blend (i); i.a from 5 to 70 weight % of a polyol mixture (i.a) comprising ethylene oxide-capped polypropylene oxides each having a hydroxyl equivalent weight of from 1200 to 3000 and containing at least 70% primary hydroxyl groups, wherein from 5 to 80% by weight of the ethylene oxide-capped polypropylene oxides are nominally difunctional, from 0.5 to 20% by weight of the ethylene oxide-capped polypropylene oxides have a nominal functionality of four or higher, and the balance of the ethylene oxide-capped polypropylene oxides, but not less than 1.5% by weight thereof, are nominally trifunctional; i.b from 1 to 20 weight % of one or more autocatalytic polyol compound (i.b) having a functionality in the range of 2 to 8 and a hydroxyl number in the range of 15 to 200, wherein said autocatalytic polyol compound comprising at least one tertiary amine group, and said autocatalytic polyol being an amine initiated polyol obtained by alkoxylation of at least one initiator molecule selected from the group consisting of 3,3'-diamino-N-methyldipropylamine, 2,2'-diamino-N-methyldiethylamine, 2,3-diamino-N-methyl-ethyl-propylamine, or a mixture thereof; i.c from 25 to 80 weight % of a low unsaturation polyol (i.c) having a functionality equal to or greater than 2, a hydroxyl equivalent weight of from 1800 to 2800, and a total unsaturation value of equal to or less than 0.06 meq/g; b providing one or more organic polyisocyanate (ii); c forming a reactive blend (iii) by continuously merging said polyol blend (i) and said organic polyisocyanate (ii) in the presence of a blowing agent and, optionally, one or more additive; and d subjecting the resulting reactive blend (iii) to conditions sufficient to cure the reactive blend to form a resilient, flexible polyurethane foam.