Researching pommel mushrooms for a friend in the States, I am comparing the competition against the Ultra Dome:
The Ultra Dome fits the budget of the gym owner as well as the gymnast who desires a home use apparatus. The dome is made of durable, molded polyethylene. The padded top easily detaches for floor circle work. The dome can be stacked onto a second base for an increased height of 5 inches. The Ultra Dome has the advantage of excellent stability on a spring floor surface and plural use as a small spotting block or preschool “shape”. Low cost, simple storability and great portability can provide multiple training stations and better lesson environments. UPS shippable.
I’ve been happy with the Ultra Dome in the past. Light weight, but sturdy.
I’ve not used The Basic Mushroom®:
… The Basic MUSHROOM head is constructed of 100% self skinning foam, which will help prevent microtrauma to the gymnast’s wrists and elbows. The working surface is textured to provide a non-slip surface. The MUSHROOM base is a white high density polyethylene plastic and has hand cut outs for easy portability. The base stands 15″ tall.The MUSHROOM head is 24″ in diameter as specified for U.S.A.G. competition. The 5″ tall MUSHROOM head attaches easily to the base with a tightening knob or can be used separately from the base for floor circles. The total height of the MUSHROOM and base is 20″ and the weight is 25 lbs. – T182
FREE SHIPPING inside the continental US! Price: $280.00
Or, perhaps, the AAI:
The new TAC/10 surface is only available on this brand, and offers gymnasts an excellent surface to prevent slipping of the hands when performing circles.
* TAC/10 Pommel Training Pod is designed for use in teaching pommel horse skills
* TAC/10 cover provides easy cleaning with excellent grip and durability
* Top is 25″ (635 mm) in diameter and 18″ (457 mm) in height
* Removable top is marked with an “X” for proper hand placementAmerican Gymnast | Products | AAI TAC/10 Pommel Trainer NEW!
Durability is the most important factor to me.
But the option in future to add alternate tops with pommel(s) might be worth a premium.
Leave a comment if you have any recommendation on this search. The Ultra Dome costs about $250 plus shipping.

The Ultra Dome fits the budget of the gym owner as well as the gymnast who desires a home use apparatus. The dome is made of durable, molded polyethylene. The padded top easily detaches for floor circle work. The dome can be stacked onto a second base for an increased height of 5 inches. The Ultra Dome has the advantage of excellent stability on a spring floor surface and plural use as a small spotting block or preschool “shape”. Low cost, simple storability and great portability can provide multiple training stations and better lesson environments. UPS shippable.
… The Basic MUSHROOM head is constructed of 100% self skinning foam, which will help prevent microtrauma to the gymnast’s wrists and elbows. The working surface is textured to provide a non-slip surface. The MUSHROOM base is a white high density polyethylene plastic and has hand cut outs for easy portability. The base stands 15″ tall.The MUSHROOM head is 24″ in diameter as specified for U.S.A.G. competition. The 5″ tall MUSHROOM head attaches easily to the base with a tightening knob or can be used separately from the base for floor circles. The total height of the MUSHROOM and base is 20″ and the weight is 25 lbs. – T182
The new TAC/10 surface is only available on this brand, and offers gymnasts an excellent surface to prevent slipping of the hands when performing circles.