KHAOS^® Shoulder Shaker – Compact Water Shoulder Trainer for Stability & Control

Water shoulder trainer

Oates Specialties KHAOS® Shoulder Shaker – Compact Water Shoulder Trainer for Stability & Control, wrist weights and shoulder tools: photo from Oates Specialties — Photo: Oates Specialties

Facts as the maker states them, read 13 Oct 2026

A flexible water-and-air shoulder trainer, 21 cm in diameter, with an empty weight of about 12 oz and a water capacity of about 4 to 12 oz for training use. The page says it trains shoulder control, scapular stability, rapid joint-reaction training and active recovery, and that it does not train lower-body force production, mound command or sport-specific decision-making.

Type	Water shoulder trainer
Weights	~12 oz (without water); ~4 oz to 12 oz (water, for training use)
Ages	designed for athletes roughly 13 and older training under coach or qualified adult supervision
Also on the page	21 cm diameter Construction: flexible outer shell, attached adjustable hand strap Fill: water (variable load) + air (firmness and shape) Pairs with: TAP® Shoulder Tube®, TAP® Baseball Training Sock, KHAOS® Water Ball
Availability	In stock
Maker SKU	KSS
The maker says	Built for baseball and softball pitchers and position players, and overhead athletes in volleyball and tennis. Commonly used for older youth athletes with lighter fills and short sets under coach or qualified adult supervision. Does not train lower-body force production, mound command, or sport-specific decision-making.
Source	oatesspecialties.com, product page, read 13 Oct 2026

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Anytime Baseball SupplyRetailer ratings: TAP weighted baseball0 reviews
Pavilion (supplier directory)Other source: Oates Specialties supplier profile0 reviews
Anytime Baseball Supply Daily Diamond blog (Kevin M. King, undated)Other source: Best weighted baseballs roundup, TAP entryThe source says: Calls TAP the store's best-selling and highest-rated weighted ball with a durable synthetic leather cover
SidelineSwapOther source: Used pitcher's training kit with TAP items0 reviews
Local Gyms and Fitness (directory)Other source: Oates Specialties LLC profile0 reviews

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