Are they're saddle packs with the skins ROAR legal?

nope. you can go to the roar webpage for a list of approved hardcase li-pos.

The MaxAmps "skins" are not ROAR legal.

ROAR rule:

8.3.2.2.1 Li-Poly battery packs must have a hard, protective case that surrounds the cell(s) in
the racing application. A factory encased hard shell pack is mandated for race
durability reasons that stem from the vulnerability of Lipo cells to physical damage.
Any physical distortion, denting or puncture to the cells will cause either an immediate
35
or long term safety risk. A hard cased pack reduces this risk significantly by protecting
the cells from crash damage, battery ejection, and general wear and tear at the track.
ROAR defines the "hard case" as a case made of ABS or similar type material. The
case shall consist of two (2) halves with each half being constructed from a single
mold that is not easily pliable and retains it shape without any exterior or interior
support. Both the top and bottom sections of the case must be secured together by
glue, double-sided tape or heat seal with a label across the seam stating "ROAR
Approved" in such a manner that separation of the case to remove or replace the cells
will destroy the case and/or label and render it unusable in competition. The case
must be installed by the manufacturer or Value added manufacturer no end User
installed cases are acceptable. The case will protect the cells from damage on all
sides and will completely cover all cells having only openings for wire connections.
Any modification to the factory approved hard case will make the pack ineligible for
participation in ROAR events.

If the maxamp saddle packs are not roar legal, then is there any lipo saddle packs hat are?

look into the trak power saddle pack. it's hard cased and actually pretty reasonable as far as price