This is exactly what it sounds like. Pregnant women are caressed, kissed and fucked by their men. And it's actually quite sweet. There is a tone of warmth and respect for the whole gestation process. A female body shaped by pregnancy is seen as an object of desire. Not a bad attitude, really.
Tony Ramos spends a nice, long time tracing slow circles on Victoria Haze's stomach, occasionally moving his hand down to stroke her pussy. Squeezing her tits, he gently sucks her nipples. When he does finally enter her, it is with long, deep, loving thrusts.
The other women on this tape are treated much the same. There is no nastiness or condescension. Instead, the male performers look upon them as something greater and more beautiful than they have ever seen. Now that is pretty darned cool.