Wales have been training for anticipated humid playing conditions at the World Cup by using rugby balls covered in baby oil.
Head coach Warren Gatland believes that humidity is going to be a factor during the tournament in Japan.
England boss Eddie Jones feels his side are fullyequipped to cope with such a scenario, and Wales have also left no stone unturned.
Day-time temperatures at Wales' current base in the southern Japanese city of Kitakyushu are 30 degrees-plus, with 75 percent humidity, and similar weather is expected elsewhere during the 44-day competition.
And Wales have already been taking measures in an attempt to replicate anticipated slippery handling conditions.
"We've done as much as we possibly can in terms of dealing with the heat.
"I think the humidity is going to be a factor. You can see how warm it is, but with the later kick-offs those temperatures are going to drop to about 20 degrees.
"It's going to be a lot cooler, but the challenge then is going to be the humidity and dealing with a slippery ball. It's how we cope with that.
"The players who have been to New Zealand will have experienced that. I come from Hamilton, where it's incredibly humid there.
"We know what it's like and we have players who have experienced a lot of night rugby, so we feel we've prepared well. We are looking forward to it."
Wales will hold an open training session at Kitakyushu Stadium on Monday, which is expected to be attended by hundreds of locals.
The players received a rapturous reception on their airport arrival, while banners and posters of support and Welsh flags are displayed throughout the city.
